CVE-2026-93453

HIGHPre-NVD 8.38.3
EchelonGraph scoreMEDIUM confidence

“—” beside the score: it is equal to the CVSS score beside it.

Score 8.3 from GitHub Security Advisory (severity: HIGH) published 2026-09-18. A secondary CVSS source baseline 8.3; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: EPSS, GitHub Security Advisory, a secondary CVSS source
Elevated

Also known asEUVD-2026-82605 (ENISA EUVD) · GHSA-gqgv-6fx9-g8mx (GitHub Security Advisories)Source: ENISA EUVD

8.3EG
EchelonGraph verdictPlan a fixRemediate within your standard update timelines (the SSVC decision on this page).
  • Public exploit or proof-of-concept code is available
CISA-KEV: Not listedEPSS PROB: 0.5%CVSS: 8.3Exploit: Public PoCExposed services: Not assessed

A fix is available — apply it.

SOGo before 5.12.11 constructs password-reset links using the client-supplied Origin header as the authority, allowing unauthenticated attackers to redirect recovery tokens to attacker-controlled domains. Attackers can submit password recovery requests with a malicious Origin header to have valid password-reset tokens mailed to victim recovery addresses within links pointing to attacker infrastructure, enabling account takeover.

CVSS v3
8.3
EG Score
8.3HIGHmedium confidence
EG Risk
53
EG Risk 53/100

EG Risk is EchelonGraph's 0–100 priority score. It fuses impact severity (EG Severity, the CVSS base score, never the KEV-floored or EPSS-lifted EG Score) with real-world exploitation and automatability, under weights EchelonGraph set by hand, so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner.

How it’s computed (value × EchelonGraph’s weight)
Severity83% × 45%
Impact severity (EG Severity): CVSS 8.3 of 10. Never the KEV-floored or EPSS-lifted EG Score.
Exploitation40% × 40%
EchelonGraph's fixed weight for EG-KEV Tier 3 (Elevated): a constant, not a probability.
Automatability0% × 15%
CISA's SSVC Automatable value: no (Vulnrichment).
SSVC (CISA's decision table, applied by EchelonGraph): Track at low or medium mission impact; Track* at high (mission-essential systems).
Exploitation none (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact total (CISA Vulnrichment). All three are CISA's SSVC values (Vulnrichment). EchelonGraph applied CISA's decision table to them; CISA publishes SSVC inputs and the table, not a decision for each CVE.
Action: A fix is available. Apply it within your standard update timelines.
EPSS PROB
0.5%
EPSS %ILE
39th
KEV
Not listed

What the EG score is made of (scorer v4.0: the three questions the 0–10 score mixes, published apart · methodology)

The EG score (8.3): severity, escalated by confirmed exploitation. This CVE's 8.3 is its impact severity (EG Severity), not escalated.

EG Severity
8.3 HIGHCVSS-B, impact only: no KEV listing, EPSS or EG-KEV tier raises it.GitHub Security Advisory CVSS
EG Likelihood
0.5% within 30 daysSource: FIRST EPSS (model v2026.06.15, score date 2026-11-10). FIRST's exploitation probability, not an EchelonGraph model.
Confirmed exploitation
None on record (CISA KEV, EG-KEV Tier 1)Reported apart from the likelihood: an observed fact, not a probability.
EG Priority
SSVC Track at medium mission impactTrack at low or medium mission impact; Track* at high (mission-essential systems).CISA BOD 26-04: 14 days if the affected system is publicly exposed; Fix on system upgrade if it is not.Each input and its source, and whom BOD 26-04 binds: the SSVC and BOD 26-04 blocks below.

SSVC (CISA's decision table, applied by EchelonGraph)Track at low or medium mission impact; Track* at high (mission-essential systems).

A fix is available. Apply it within your standard update timelines.

Exploitation none (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact total (CISA Vulnrichment). All three are CISA's SSVC values (Vulnrichment). EchelonGraph applied CISA's decision table to them; CISA publishes SSVC inputs and the table, not a decision for each CVE. Mission impact is CISA's Mission & Well-being decision point, and only you can judge it. CISA's table makes it high when Mission Prevalence is Essential — the vulnerable component "directly provides capabilities that constitute at least one MEF for at least one entity" (MEF: mission essential function) — or when Public Well-Being Impact is Irreversible: "multiple fatalities are likely", the cyber-physical system "is likely lost or destroyed", "extreme or serious externalities" are imposed on other parties, or social systems such as elections or the financial grid "are destabilized and potentially collapse". CISA's decision table

BOD 26-04 (CISA's remediation timeline, Table 1)14 days if the affected system is publicly exposed; Fix on system upgrade if it is not.

The score's inputs: In CISA KEV no (CISA's KEV catalog) · Automatable no (CISA Vulnrichment) · Technical impact total (CISA Vulnrichment). Whether your system is publicly exposed is yours to answer. BOD 26-04 binds US Federal Civilian Executive Branch agencies; for anyone else it is CISA's published timeline, a reference rather than an obligation. The directive · how EchelonGraph applies it

Published

September 17, 2026

Last Modified

September 22, 2026

Advisory Details (6)

Auto-updated Sep 17, 2026
Patch available. Sources: github_commit.
Web page

SOGo before 5.12.11 Password Reset Token Interception via Origin Header | Advisories | VulnCheck

https://www.vulncheck.com/advisories/sogo-before-5.12.11-password-reset-token-interception-via-origin-header
Web page

GitHub - Alinto/sogo: SOGo is a very fast and scalable modern collaboration suite (groupware). It offers calendaring, address book management, and a full-featured Webmail client along with resource sharing and permission handling. It also makes use of documented standards (IMAP, CalDAV, CardDAV, etc.) and thereby provides native connectivity (without plugins) to many clients such as Microsoft Outlook, Apple iCal, the iPhone, Mozilla Lightning, and a plethora of mobile devices. · GitHub

https://github.com/Alinto/sogo
Web page

sogo/UI/MainUI/SOGoRootPage.m at SOGo-5.12.10 · Alinto/sogo · GitHub

https://github.com/Alinto/sogo/blob/SOGo-5.12.10/UI/MainUI/SOGoRootPage.m#L1375
GitHub commit Patch Available

commit 04a3e9823889 (Alinto/sogo)

Patch available: Alinto/sogo SOGo-5.12.11 (contains commit 04a3e9823889)

https://github.com/Alinto/sogo/commit/04a3e9823889acaf6c247b224f5f7a0108f8f829
GitHub commit Patch Available

commit 382118a93b69 (Alinto/sogo)

Patch available: Alinto/sogo SOGo-5.12.11 (contains commit 382118a93b69)

https://github.com/Alinto/sogo/commit/382118a93b6925de2ce7f774abc1865ebea2dbba

Vendor Advisories for CVE-2026-93453(1)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Patch Availability(1)

Vendor / EcosystemFix (by version range) / PatchReleasedSource
ubuntusogo-common (5.12.4-1.2ubuntu0.1~esm2) @ resolute2026-11-11ubuntu

Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.

Affected Packages

(2 across 2 ecosystems)
Debian:12(1)
PackageVulnerable rangeFix by version rangeDependents
sogo5.10.0-1 ... 5.9.1-1 (35 versions)
  • every version on: no fix on record
—
Debian:13(1)
PackageVulnerable rangeFix by version rangeDependents
sogo5.12.1-3, 5.12.1-3+deb13u1, 5.12.1-3+deb13u2
  • every version up to 5.12.1-3+deb13u3: fixed in 5.12.1-3+deb13u3
—

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

All Vendor Advisories

(1)

Every vendor that published an advisory referencing this CVE — pulled from our cve_vendor_advisories aggregation. Click any row for the vendor's original advisory page.

Data Freshness Timeline

(refreshed 9× in last 7d / 35× in last 30d)

Each row is a time one of our pipelines fetched, updated or re-scored this CVE. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed its CVE.org record (CNA or CISA ADP). An arrow marks a change the record states ("CVSS v3 → 9.1"); EPSS and GHSA rows show the values recorded at that time, not what changed (EPSS values are rounded; hover one for the exact figures). "EchelonGraph re-scored" is our own recompute of this CVE's score, not an update from a source, and is not counted in the refreshes above. Most recent first.

Showing the most recent 100 of 147 rows on record for this CVE.

A repeat, a row identical to one the same pipeline wrote less than 10 seconds earlier, is not a separate refresh and is not counted. None are among the latest 100 rows. The 47 oldest rows on record are not shown and were not checked, so the counts can still include repeats.

  1. 2026-11-13 16:58 UTCEPSS rescoreEPSS 0.5% · 39th percentile
  2. 2026-11-12 16:35 UTCEPSS rescoreEPSS 0.5% · 39th percentile
  3. 2026-11-11 16:41 UTCEPSS rescoreEPSS 0.5% · 39th percentile
  4. 2026-11-11 10:45 UTCEchelonGraph re-scored
  5. 2026-11-11 10:45 UTCVendor advisory
  6. 2026-11-11 10:45 UTCGHSA enrichmentGHSA-gqgv-6fx9-g8mx · GitHub severity HIGH · GitHub CVSS 8.3
  7. 2026-11-10 16:46 UTCEPSS rescoreEPSS 0.5% · 39th percentile
  8. 2026-11-09 16:36 UTCEPSS rescoreEPSS 0.5% · 39th percentile
  9. 2026-11-08 16:41 UTCEPSS rescoreEPSS 0.5% · 39th percentile
  10. 2026-11-07 16:40 UTCEPSS rescoreEPSS 0.5% · 39th percentile
  11. 2026-11-06 16:40 UTCEPSS rescoreEPSS 0.5% · 39th percentile
  12. 2026-11-05 16:39 UTCEPSS rescoreEPSS 0.5% · 39th percentile
  13. 2026-11-04 16:37 UTCEPSS rescoreEPSS 0.5% · 39th percentile
  14. 2026-11-03 23:30 UTCEchelonGraph re-scored
  15. 2026-11-03 23:30 UTCGHSA enrichmentGHSA-gqgv-6fx9-g8mx · GitHub severity HIGH · GitHub CVSS 8.3
  16. 2026-11-03 16:49 UTCEPSS rescoreEPSS 0.5% · 39th percentile
  17. 2026-11-02 16:46 UTCEPSS rescoreEPSS 0.5% · 39th percentile
  18. 2026-11-01 16:36 UTCEPSS rescoreEPSS 0.5% · 39th percentile
  19. 2026-10-31 16:33 UTCEPSS rescoreEPSS 0.5% · 39th percentile
  20. 2026-10-30 16:35 UTCEPSS rescoreEPSS 0.5% · 39th percentile
  21. 2026-10-29 16:34 UTCEPSS rescoreEPSS 0.5% · 39th percentile
  22. 2026-10-28 16:33 UTCEPSS rescoreEPSS 0.5% · 39th percentile
  23. 2026-10-27 16:33 UTCEPSS rescoreEPSS 0.5% · 39th percentile
  24. 2026-10-27 11:30 UTCEchelonGraph re-scored
  25. 2026-10-27 11:30 UTCGHSA enrichmentGHSA-gqgv-6fx9-g8mx · GitHub severity HIGH · GitHub CVSS 8.3
Show 75 more
  1. 2026-10-26 16:33 UTCEPSS rescoreEPSS 0.5% · 38th percentile
  2. 2026-10-25 16:34 UTCEPSS rescoreEPSS 0.5% · 38th percentile
  3. 2026-10-25 13:49 UTCEchelonGraph re-scored
  4. 2026-10-24 16:34 UTCEPSS rescoreEPSS 0.5% · 38th percentile
  5. 2026-10-23 16:33 UTCEPSS rescoreEPSS 0.5% · 38th percentile
  6. 2026-10-22 16:35 UTCEPSS rescoreEPSS 0.5% · 38th percentile
  7. 2026-10-21 16:34 UTCEPSS rescoreEPSS 0.5% · 38th percentile
  8. 2026-10-20 16:34 UTCEPSS rescoreEPSS 0.5% · 37th percentile
  9. 2026-10-19 16:33 UTCEPSS rescoreEPSS 0.5% · 37th percentile
  10. 2026-10-18 16:33 UTCEPSS rescoreEPSS 0.5% · 37th percentile
  11. 2026-10-18 02:59 UTCEchelonGraph re-scored
  12. 2026-10-18 00:35 UTCEchelonGraph re-scored
  13. 2026-10-18 00:35 UTCGHSA enrichmentGHSA-gqgv-6fx9-g8mx · GitHub severity HIGH · GitHub CVSS 8.3
  14. 2026-10-17 16:35 UTCEPSS rescoreEPSS 0.5% · 37th percentile
  15. 2026-10-16 16:45 UTCEPSS rescoreEPSS 0.5% · 37th percentile
  16. 2026-10-15 16:33 UTCEPSS rescoreEPSS 0.5% · 40th percentile
  17. 2026-10-14 16:34 UTCEPSS rescoreEPSS 0.5% · 40th percentile
  18. 2026-10-13 16:35 UTCEPSS rescoreEPSS 0.5% · 40th percentile
  19. 2026-10-13 04:27 UTCEchelonGraph re-scored
  20. 2026-10-13 04:26 UTCGHSA enrichmentGHSA-gqgv-6fx9-g8mx · GitHub severity HIGH · GitHub CVSS 8.3
  21. 2026-10-12 16:35 UTCEPSS rescoreEPSS 0.5% · 40th percentile
  22. 2026-10-12 14:43 UTCEchelonGraph re-scored
  23. 2026-10-11 19:12 UTCEchelonGraph re-scored
  24. 2026-10-11 16:28 UTCEchelonGraph re-scored
  25. 2026-10-11 15:58 UTCEchelonGraph re-scored
  26. 2026-10-11 15:58 UTCGHSA enrichmentGHSA-gqgv-6fx9-g8mx · GitHub severity HIGH · GitHub CVSS 8.3
  27. 2026-10-11 13:50 UTCEPSS rescoreEPSS 0.5% · 40th percentile
  28. 2026-10-11 13:42 UTCEchelonGraph re-scored
  29. 2026-10-11 02:50 UTCEchelonGraph re-scored
  30. 2026-10-11 02:49 UTCGHSA enrichmentGHSA-gqgv-6fx9-g8mx · GitHub severity HIGH · GitHub CVSS 8.3
  31. 2026-10-10 20:00 UTCEPSS rescoreEPSS 0.5% · 40th percentile
  32. 2026-10-10 12:19 UTCGHSA enrichmentGHSA-gqgv-6fx9-g8mx · GitHub severity HIGH · GitHub CVSS 8.3
  33. 2026-10-09 23:12 UTCEchelonGraph re-scored
  34. 2026-10-09 23:12 UTCGHSA enrichmentGHSA-gqgv-6fx9-g8mx · GitHub severity HIGH · GitHub CVSS 8.3
  35. 2026-10-09 20:08 UTCEPSS rescoreEPSS 0.5% · 40th percentile
  36. 2026-10-09 10:04 UTCGHSA enrichmentGHSA-gqgv-6fx9-g8mx · GitHub severity HIGH · GitHub CVSS 8.3
  37. 2026-10-08 20:25 UTCEchelonGraph re-scored
  38. 2026-10-08 20:25 UTCGHSA enrichmentGHSA-gqgv-6fx9-g8mx · GitHub severity HIGH · GitHub CVSS 8.3
  39. 2026-10-08 17:14 UTCEPSS rescoreEPSS 0.5% · 40th percentile
  40. 2026-10-08 07:12 UTCEchelonGraph re-scored
  41. 2026-10-08 07:12 UTCGHSA enrichmentGHSA-gqgv-6fx9-g8mx · GitHub severity HIGH · GitHub CVSS 8.3
  42. 2026-10-07 23:48 UTCEPSS rescoreEPSS 0.5% · 40th percentile
  43. 2026-10-07 18:04 UTCGHSA enrichmentGHSA-gqgv-6fx9-g8mx · GitHub severity HIGH · GitHub CVSS 8.3
  44. 2026-10-07 03:49 UTCEchelonGraph re-scored
  45. 2026-10-07 03:49 UTCGHSA enrichmentGHSA-gqgv-6fx9-g8mx · GitHub severity HIGH · GitHub CVSS 8.3
  46. 2026-10-06 15:19 UTCEPSS rescoreEPSS 0.5% · 40th percentile
  47. 2026-10-06 14:42 UTCGHSA enrichmentGHSA-gqgv-6fx9-g8mx · GitHub severity HIGH · GitHub CVSS 8.3
  48. 2026-10-06 01:34 UTCEchelonGraph re-scored
  49. 2026-10-06 01:34 UTCGHSA enrichmentGHSA-gqgv-6fx9-g8mx · GitHub severity HIGH · GitHub CVSS 8.3
  50. 2026-10-05 17:44 UTCEPSS rescoreEPSS 0.5% · 40th percentile
  51. 2026-10-05 12:15 UTCEchelonGraph re-scored
  52. 2026-10-05 12:15 UTCGHSA enrichmentGHSA-gqgv-6fx9-g8mx · GitHub severity HIGH · GitHub CVSS 8.3
  53. 2026-10-04 23:23 UTCEPSS rescoreEPSS 0.5% · 40th percentile
  54. 2026-10-04 23:07 UTCGHSA enrichmentGHSA-gqgv-6fx9-g8mx · GitHub severity HIGH · GitHub CVSS 8.3
  55. 2026-10-04 09:54 UTCGHSA enrichmentGHSA-gqgv-6fx9-g8mx · GitHub severity HIGH · GitHub CVSS 8.3
  56. 2026-10-03 20:46 UTCEchelonGraph re-scored
  57. 2026-10-03 20:46 UTCGHSA enrichmentGHSA-gqgv-6fx9-g8mx · GitHub severity HIGH · GitHub CVSS 8.3
  58. 2026-10-03 14:26 UTCEPSS rescoreEPSS 0.5% · 40th percentile
  59. 2026-10-03 07:38 UTCGHSA enrichmentGHSA-gqgv-6fx9-g8mx · GitHub severity HIGH · GitHub CVSS 8.3
  60. 2026-10-02 18:25 UTCEchelonGraph re-scored
  61. 2026-10-02 18:25 UTCGHSA enrichmentGHSA-gqgv-6fx9-g8mx · GitHub severity HIGH · GitHub CVSS 8.3
  62. 2026-10-02 05:18 UTCEchelonGraph re-scored
  63. 2026-10-02 05:18 UTCGHSA enrichmentGHSA-gqgv-6fx9-g8mx · GitHub severity HIGH · GitHub CVSS 8.3
  64. 2026-10-01 19:51 UTCEPSS rescoreEPSS 0.5% · 39th percentile
  65. 2026-10-01 16:06 UTCGHSA enrichmentGHSA-gqgv-6fx9-g8mx · GitHub severity HIGH · GitHub CVSS 8.3
  66. 2026-10-01 02:59 UTCEchelonGraph re-scored
  67. 2026-10-01 02:59 UTCGHSA enrichmentGHSA-gqgv-6fx9-g8mx · GitHub severity HIGH · GitHub CVSS 8.3
  68. 2026-09-30 15:04 UTCEPSS rescoreEPSS 0.5% · 39th percentile
  69. 2026-09-30 13:50 UTCGHSA enrichmentGHSA-gqgv-6fx9-g8mx · GitHub severity HIGH · GitHub CVSS 8.3
  70. 2026-09-30 00:42 UTCEchelonGraph re-scored
  71. 2026-09-30 00:42 UTCGHSA enrichmentGHSA-gqgv-6fx9-g8mx · GitHub severity HIGH · GitHub CVSS 8.3
  72. 2026-09-29 10:44 UTCEchelonGraph re-scored
  73. 2026-09-29 10:44 UTCGHSA enrichmentGHSA-gqgv-6fx9-g8mx · GitHub severity HIGH · GitHub CVSS 8.3
  74. 2026-09-28 21:18 UTCEchelonGraph re-scored
  75. 2026-09-28 21:18 UTCGHSA enrichmentGHSA-gqgv-6fx9-g8mx · GitHub severity HIGH · GitHub CVSS 8.3

Publicly available exploits

(1 reference)

Public exploit code is referenced for this CVE (1 GitHub PoC). Defenders should treat patch urgency accordingly.

  • GitHub PoCFaceless0x7/CVE-2026-93453
    Published Sep 18, 2026

    CVE-2026-93453 Exploit — SOGo password reset link poisoning via attacker-controlled Origin header, enabling password reset token interception and account takeover.

    Open source ↗

Frequently asked(5)

What is CVE-2026-93453?
CVE-2026-93453 is a high-severity vulnerability; its CVE record was published on September 17, 2026. SOGo before 5.12.11 constructs password-reset links using the client-supplied Origin header as the authority, allowing unauthenticated attackers to redirect recovery tokens to attacker-controlled domains. Attackers can submit password recovery requests with a malicious Origin header to have valid…
When was CVE-2026-93453 made public?
CVE-2026-93453 was made public on September 14, 2026: that is the date its CVE record's CNA, VulnCheck, gives for when the vulnerability was made public. The CVE record itself was published on September 17, 2026. EchelonGraph's copy of the record carries a last-modified date of September 22, 2026; the record at its source may have been updated since.
Is CVE-2026-93453 actively exploited?
CVE-2026-93453 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.5% probability of exploitation in the next 30 days (39th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-93453?
CVE-2026-93453 has a CVSS base score of 8.3 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-93453?
A fix for CVE-2026-93453 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2026-93453 are linked in the Vendor Advisories panel on this page.

Dependency Blast Radius

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