CVE-2026-41902

CRITICALNVD 9.19.1
EchelonGraph scoreMEDIUM confidence

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

This critical-severity CVE scores 9.1 under NVD CVSS v3. EPSS exploit probability: 0.2% (16th percentile of EPSS-scored CVEs). No GitHub Security Advisory CVSS is on record for this CVE.

Triggered by: Headline CVSS from NVD CVSS v3
Sources: EPSS, NVD CVSS v3
Elevated

Also known asEUVD-2026-28405 (ENISA EUVD)Source: ENISA EUVD

9.1EG
EchelonGraph verdictPlan a fixRemediate within your standard update timelines at low or medium mission impact and sooner than that at high (the SSVC decision on this page).
  • CISA's Vulnrichment rates exploitation as PoC; EchelonGraph holds no exploit-code reference for it
CISA-KEV: Not listedEPSS PROB: 0.2%CVSS: 9.1Exploit: No code on recordExposed services: Not assessed

A fix is available — apply it.

FreeScout is a free help desk and shared inbox built with PHP's Laravel framework. Prior to version 1.8.217, the /user-setup/{hash} endpoint accepts a 60-character random invite_hash to set a new user's password. The endpoint performs no expiration check — the hash remains valid indefinitely until consumed. Combined with realistic hash-leakage scenarios (forwarded invite emails, HTTP referrer to external CDNs on the setup page, server-side log exposure, abandoned invite emails in shared inboxes), this enables unauthenticated permanent account takeover months or years after invite issuance. If the leaked invite was sent to an admin, the takeover yields admin access. This issue has been patched in version 1.8.217.

CVSS v3
9.1
EG Score
9.1CRITICALmedium confidence
EG Risk
72
EG Risk 72/100

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)
Severity91% × 45%
Impact severity (EG Severity): CVSS 9.1 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.
Automatability100% × 15%
CISA's SSVC Automatable value: yes (Vulnrichment).
SSVC (CISA's decision table, applied by EchelonGraph): Track at low, Track* at medium and Attend at high mission impact.
Exploitation public PoC (CISA Vulnrichment) · Automatable yes (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 at low or medium mission impact and sooner than that at high.
EPSS PROB
0.2%
EPSS %ILE
16th
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 (9.1): severity, escalated by confirmed exploitation. This CVE's 9.1 is its impact severity (EG Severity), not escalated.

EG Severity
9.1 CRITICALCVSS-B, impact only: no KEV listing, EPSS or EG-KEV tier raises it.NVD CVSS v3 · CVSS v3.0 or v3.1
EG Likelihood
0.2% within 30 daysSource: FIRST EPSS (model v2026.06.15, score date 2026-11-12). 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, Track* at medium and Attend at high mission impact.CISA BOD 26-04: 3 days if the affected system is publicly exposed; 60 days 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, Track* at medium and Attend at high mission impact.

A fix is available. Apply it within your standard update timelines at low or medium mission impact and sooner than that at high.

Exploitation public PoC (CISA Vulnrichment) · Automatable yes (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)3 days if the affected system is publicly exposed; 60 days if it is not.

The score's inputs: In CISA KEV no (CISA's KEV catalog) · Automatable yes (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

May 7, 2026

Last Modified

May 8, 2026

Advisory Details (2)

Auto-updated Aug 1, 2026
Patch available. Sources: github_release, github.
GitHub advisoryMentions a patch (unverified)

User invitation hash never expires: permanent unauthenticated account takeover if invite link leaks · Advisory · freescout-help-desk/freescout · GitHub

https://github.com/freescout-help-desk/freescout/security/advisories/GHSA-hqff-cwx7-3jpm
GitHub release Patch Available

1.8.217

Patch available: freescout-help-desk/freescout 1.8.217

https://github.com/freescout-help-desk/freescout/releases/tag/1.8.217

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 7× in last 7d / 31× 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 238 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 138 oldest rows on record are not shown and were not checked, so the counts can still include repeats.

  1. 2026-11-13 08:41 UTCEchelonGraph re-scored
  2. 2026-11-12 16:33 UTCEPSS rescoreEPSS 0.2% · 16th percentile
  3. 2026-11-12 06:24 UTCEchelonGraph re-scored
  4. 2026-11-11 16:39 UTCEPSS rescoreEPSS 0.2% · 16th percentile
  5. 2026-11-11 04:08 UTCEchelonGraph re-scored
  6. 2026-11-10 16:44 UTCEPSS rescoreEPSS 0.2% · 16th percentile
  7. 2026-11-10 01:48 UTCEchelonGraph re-scored
  8. 2026-11-09 16:35 UTCEPSS rescoreEPSS 0.2% · 15th percentile
  9. 2026-11-08 23:33 UTCEchelonGraph re-scored
  10. 2026-11-08 16:39 UTCEPSS rescoreEPSS 0.2% · 15th percentile
  11. 2026-11-07 21:17 UTCEchelonGraph re-scored
  12. 2026-11-07 16:39 UTCEPSS rescoreEPSS 0.2% · 15th percentile
  13. 2026-11-06 19:02 UTCEchelonGraph re-scored
  14. 2026-11-06 16:37 UTCEPSS rescoreEPSS 0.2% · 15th percentile
  15. 2026-11-06 08:25 UTCOSV refresh
  16. 2026-11-05 16:47 UTCEchelonGraph re-scored
  17. 2026-11-05 16:37 UTCEPSS rescoreEPSS 0.2% · 16th percentile
  18. 2026-11-04 16:35 UTCEPSS rescoreEPSS 0.2% · 16th percentile
  19. 2026-11-04 14:31 UTCEchelonGraph re-scored
  20. 2026-11-03 16:48 UTCEPSS rescoreEPSS 0.2% · 15th percentile
  21. 2026-11-03 12:15 UTCEchelonGraph re-scored
  22. 2026-11-02 16:44 UTCEPSS rescoreEPSS 0.2% · 15th percentile
  23. 2026-11-02 09:59 UTCEchelonGraph re-scored
  24. 2026-11-01 16:34 UTCEPSS rescoreEPSS 0.2% · 15th percentile
  25. 2026-11-01 07:43 UTCEchelonGraph re-scored
Show 75 more
  1. 2026-10-31 16:32 UTCEPSS rescoreEPSS 0.2% · 15th percentile
  2. 2026-10-31 05:27 UTCEchelonGraph re-scored
  3. 2026-10-30 16:34 UTCEPSS rescoreEPSS 0.2% · 15th percentile
  4. 2026-10-30 03:12 UTCEchelonGraph re-scored
  5. 2026-10-29 16:33 UTCEPSS rescoreEPSS 0.2% · 15th percentile
  6. 2026-10-29 00:57 UTCEchelonGraph re-scored
  7. 2026-10-28 16:32 UTCEPSS rescoreEPSS 0.2% · 15th percentile
  8. 2026-10-27 22:41 UTCEchelonGraph re-scored
  9. 2026-10-27 16:32 UTCEPSS rescoreEPSS 0.2% · 15th percentile
  10. 2026-10-26 20:24 UTCEchelonGraph re-scored
  11. 2026-10-26 16:31 UTCEPSS rescoreEPSS 0.2% · 15th percentile
  12. 2026-10-25 16:33 UTCEPSS rescoreEPSS 0.2% · 15th percentile
  13. 2026-10-25 14:29 UTCEchelonGraph re-scored
  14. 2026-10-24 16:33 UTCEPSS rescoreEPSS 0.4% · 35th percentile
  15. 2026-10-24 14:06 UTCEchelonGraph re-scored
  16. 2026-10-23 16:31 UTCEPSS rescoreEPSS 0.4% · 35th percentile
  17. 2026-10-23 11:51 UTCEchelonGraph re-scored
  18. 2026-10-22 16:34 UTCEPSS rescoreEPSS 0.4% · 35th percentile
  19. 2026-10-22 09:35 UTCEchelonGraph re-scored
  20. 2026-10-21 16:33 UTCEPSS rescoreEPSS 0.4% · 35th percentile
  21. 2026-10-21 07:19 UTCEchelonGraph re-scored
  22. 2026-10-20 16:33 UTCEPSS rescoreEPSS 0.4% · 34th percentile
  23. 2026-10-20 05:04 UTCEchelonGraph re-scored
  24. 2026-10-19 16:32 UTCEPSS rescoreEPSS 0.4% · 34th percentile
  25. 2026-10-19 02:48 UTCEchelonGraph re-scored
  26. 2026-10-18 16:32 UTCEPSS rescoreEPSS 0.4% · 34th percentile
  27. 2026-10-18 03:41 UTCEchelonGraph re-scored
  28. 2026-10-18 00:32 UTCEchelonGraph re-scored
  29. 2026-10-17 16:34 UTCEPSS rescoreEPSS 0.4% · 34th percentile
  30. 2026-10-16 22:15 UTCEchelonGraph re-scored
  31. 2026-10-16 16:42 UTCEPSS rescoreEPSS 0.4% · 34th percentile
  32. 2026-10-15 18:53 UTCEchelonGraph re-scored
  33. 2026-10-15 16:32 UTCEPSS rescoreEPSS 0.4% · 34th percentile
  34. 2026-10-14 16:33 UTCEPSS rescoreEPSS 0.4% · 34th percentile
  35. 2026-10-14 12:36 UTCEchelonGraph re-scored
  36. 2026-10-13 16:34 UTCEPSS rescoreEPSS 0.4% · 34th percentile
  37. 2026-10-13 10:17 UTCEchelonGraph re-scored
  38. 2026-10-12 16:34 UTCEPSS rescoreEPSS 0.4% · 34th percentile
  39. 2026-10-12 16:08 UTCEchelonGraph re-scored
  40. 2026-10-11 19:49 UTCEchelonGraph re-scored
  41. 2026-10-11 17:04 UTCEchelonGraph re-scored
  42. 2026-10-11 14:30 UTCEchelonGraph re-scored
  43. 2026-10-11 13:48 UTCEPSS rescoreEPSS 0.4% · 34th percentile
  44. 2026-10-10 20:00 UTCEPSS rescoreEPSS 0.4% · 34th percentile
  45. 2026-10-09 20:07 UTCEPSS rescoreEPSS 0.4% · 34th percentile
  46. 2026-10-08 17:12 UTCEPSS rescoreEPSS 0.4% · 34th percentile
  47. 2026-10-07 23:48 UTCEPSS rescoreEPSS 0.4% · 34th percentile
  48. 2026-10-06 15:17 UTCEPSS rescoreEPSS 0.4% · 34th percentile
  49. 2026-10-05 17:43 UTCEPSS rescoreEPSS 0.4% · 34th percentile
  50. 2026-10-04 23:22 UTCEPSS rescoreEPSS 0.4% · 34th percentile
  51. 2026-10-03 14:25 UTCEPSS rescoreEPSS 0.4% · 34th percentile
  52. 2026-10-01 19:50 UTCEPSS rescoreEPSS 0.4% · 34th percentile
  53. 2026-09-30 15:03 UTCEPSS rescoreEPSS 0.4% · 33rd percentile
  54. 2026-09-30 08:41 UTCOSV refresh
  55. 2026-09-27 13:48 UTCEPSS rescoreEPSS 0.4% · 33rd percentile
  56. 2026-09-26 15:58 UTCEPSS rescoreEPSS 0.4% · 33rd percentile
  57. 2026-09-23 17:53 UTCEPSS rescoreEPSS 0.2% · 16th percentile
  58. 2026-09-20 20:15 UTCEPSS rescoreEPSS 0.2% · 16th percentile
  59. 2026-09-18 19:28 UTCEPSS rescoreEPSS 0.2% · 16th percentile
  60. 2026-09-17 19:31 UTCEPSS rescoreEPSS 0.2% · 16th percentile
  61. 2026-09-16 14:08 UTCEPSS rescoreEPSS 0.2% · 16th percentile
  62. 2026-09-16 05:15 UTCEPSS rescoreEPSS 0.2% · 16th percentile
  63. 2026-09-13 16:47 UTCEPSS rescoreEPSS 0.2% · 15th percentile
  64. 2026-09-12 15:01 UTCEPSS rescoreEPSS 0.2% · 15th percentile
  65. 2026-09-11 15:23 UTCOSV refresh
  66. 2026-09-11 14:53 UTCEPSS rescoreEPSS 0.2% · 15th percentile
  67. 2026-09-11 09:37 UTCEPSS rescoreEPSS 0.2% · 15th percentile
  68. 2026-09-10 09:34 UTCEPSS rescoreEPSS 0.2% · 15th percentile
  69. 2026-09-08 22:00 UTCEPSS rescoreEPSS 0.2% · 15th percentile
  70. 2026-09-07 16:01 UTCEPSS rescoreEPSS 0.2% · 15th percentile
  71. 2026-09-06 13:47 UTCEPSS rescoreEPSS 0.2% · 15th percentile
  72. 2026-09-04 05:06 UTCEPSS rescoreEPSS 0.2% · 15th percentile
  73. 2026-09-02 14:12 UTCEPSS rescoreEPSS 0.2% · 15th percentile
  74. 2026-09-01 13:53 UTCEPSS rescoreEPSS 0.2% · 15th percentile
  75. 2026-09-01 04:39 UTCEPSS rescoreEPSS 0.2% · 15th percentile

Frequently asked(5)

What is CVE-2026-41902?
CVE-2026-41902 is a critical-severity vulnerability; its CVE record was published on May 7, 2026. FreeScout is a free help desk and shared inbox built with PHP's Laravel framework. Prior to version 1.8.217, the /user-setup/{hash} endpoint accepts a 60-character random invite_hash to set a new user's password. The endpoint performs no expiration check — the hash remains valid indefinitely until…
When was the CVE record for CVE-2026-41902 published?
The CVE record for CVE-2026-41902 was published on May 7, 2026. That is the record's publication date; the vulnerability itself may have been made public earlier. EchelonGraph's copy of the record carries a last-modified date of May 8, 2026; the record at its source may have been updated since.
Is CVE-2026-41902 actively exploited?
CVE-2026-41902 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.2% probability of exploitation in the next 30 days (16th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-41902?
CVE-2026-41902 has a CVSS v3 base score of 9.1 (NVD).
How do I remediate CVE-2026-41902?
A fix for CVE-2026-41902 is available: update to the fixed version the vendor names in its advisory.

Dependency Blast Radius

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