CVE-2026-81827

MEDIUMPre-NVD 6.96.9
EchelonGraph scoreMEDIUM confidence

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

This medium-severity CVE scores 6.9 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit probability: 0.4% (38th percentile of EPSS-scored CVEs). No GitHub Security Advisory CVSS is on record for this CVE.

Triggered by: Headline CVSS from a secondary CVSS source
Sources: EPSS, a secondary CVSS source

Also known asEUVD-2026-67133 (ENISA EUVD) · GHSA-3hq8-r684-4qwf (GitHub Security Advisories)Source: ENISA EUVD

6.9EG
EchelonGraph verdictMonitorThe upstream fix is not in a release yet: until the release ships, restrict network exposure of the affected system or apply the vendor's mitigation on your normal schedule at low or medium mission impact and sooner than that at high, then apply it (the SSVC decision on this page).
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0.4%CVSS: 6.9Exploit: None knownExposed services: Not assessed

An upstream fix is merged but not yet released — mitigate (WAF / firewall / segmentation) until the release ships, then apply it.

Affected versions of Flowintel incorrectly attempted to validate login email addresses by calling Email(email). That does not perform WTForms field validation; it merely constructs a validator object.

Consequently, malformed attacker-controlled email input could continue through the login process and be written to security-relevant logs. The vulnerable code inserted the supplied email into both a warning log and the custom audit logger. Since CR/LF characters were not escaped, an unauthenticated attacker could potentially inject additional physical log lines or forge misleading log entries.

The patch corrects the validation call to Email()(form, form.email), changes the standard logging call to parameterized logging, and introduces _sanitize_log_fragment() so carriage returns and line feeds are encoded instead of creating new records.

Version impacted >=3.3.0

CVSS
6.9
EG Score
6.9MEDIUMmedium confidence
EG Risk
46
EG Risk 46/100

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)
Severity69% × 45%
Impact severity (EG Severity): CVSS 6.9 of 10. Never the KEV-floored or EPSS-lifted EG Score.
Exploitation0.4% × 40%
FIRST EPSS: the 30-day exploitation probability when EchelonGraph scored this CVE.
Automatability100% × 15%
CISA's SSVC Automatable value: yes (Vulnrichment).
SSVC (CISA's decision table, applied by EchelonGraph): Track at low or medium mission impact; Attend at high (mission-essential systems).
Exploitation none (CISA Vulnrichment) · Automatable yes (CISA Vulnrichment) · Technical impact partial (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: An upstream fix is merged but not yet in a tagged release. Until the release ships, restrict network exposure of the affected system or apply the vendor's mitigation on your normal schedule at low or medium mission impact and sooner than that at high, then apply it.
EPSS PROB
0.4%
EPSS %ILE
38th
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 (6.9): severity, escalated by confirmed exploitation. This CVE's 6.9 is its impact severity (EG Severity), not escalated.

EG Severity
6.9 MEDIUMCVSS-B, impact only: no KEV listing, EPSS or EG-KEV tier raises it.a secondary CVSS source
EG Likelihood
0.4% within 30 daysSource: FIRST EPSS (model v2026.06.15, score date 2026-11-07). 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; Attend at high (mission-essential systems).CISA BOD 26-04: 14 days if the affected system is publicly exposed; 60 days if it is not.No released fix is confirmed on this page, but CISA's timeline does not wait for a fix's release: it starts when an agency identifies the flaw on an asset and updates the CDM Agency and Federal Dashboard, and the directive counts patching, decommissioning the system or another action as remediation. Until a fixed release is applied, mitigate as this page's verdict says.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; Attend at high (mission-essential systems).

An upstream fix is merged but not yet in a tagged release. Until the release ships, restrict network exposure of the affected system or apply the vendor's mitigation on your normal schedule at low or medium mission impact and sooner than that at high, then apply it.

Exploitation none (CISA Vulnrichment) · Automatable yes (CISA Vulnrichment) · Technical impact partial (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; 60 days if it is not.

No released fix is confirmed on this page, but CISA's timeline does not wait for a fix's release: it starts when an agency identifies the flaw on an asset and updates the CDM Agency and Federal Dashboard, and the directive counts patching, decommissioning the system or another action as remediation. Until a fixed release is applied, mitigate as this page's verdict says.

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

August 27, 2026

Last Modified

August 28, 2026

Advisory Details (1)

Auto-updated Aug 27, 2026
Upstream fix merged — awaiting tagged release. Sources: github_commit.
GitHub commit

commit 660b4cc40505 (flowintel/flowintel)

Fix landed in flowintel/flowintel commit 660b4cc40505 — awaiting tagged release

https://github.com/flowintel/flowintel/commit/660b4cc405055a794f157d3e4612520f12fe65bf

Vendor Advisories for CVE-2026-81827(1)

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

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 8× in last 7d / 33× 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 → 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 159 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 59 oldest rows on record are not shown and were not checked, so the counts can still include repeats.

  1. 2026-11-12 16:34 UTCEPSS rescoreEPSS 0.4% · 38th percentile
  2. 2026-11-11 16:40 UTCEPSS rescoreEPSS 0.4% · 38th percentile
  3. 2026-11-10 16:45 UTCEPSS rescoreEPSS 0.4% · 38th percentile
  4. 2026-11-09 16:36 UTCEPSS rescoreEPSS 0.4% · 37th percentile
  5. 2026-11-08 16:41 UTCEPSS rescoreEPSS 0.4% · 37th percentile
  6. 2026-11-07 19:17 UTCGHSA enrichmentGHSA-3hq8-r684-4qwf · GitHub severity MODERATE
  7. 2026-11-07 19:17 UTCEchelonGraph re-scored
  8. 2026-11-07 16:40 UTCEPSS rescoreEPSS 0.4% · 37th percentile
  9. 2026-11-06 16:39 UTCEPSS rescoreEPSS 0.4% · 37th percentile
  10. 2026-11-05 16:38 UTCEPSS rescoreEPSS 0.4% · 37th percentile
  11. 2026-11-04 16:37 UTCEPSS rescoreEPSS 0.4% · 37th percentile
  12. 2026-11-03 16:49 UTCEPSS rescoreEPSS 0.4% · 37th percentile
  13. 2026-11-02 16:46 UTCEPSS rescoreEPSS 0.4% · 37th percentile
  14. 2026-11-01 16:35 UTCEPSS rescoreEPSS 0.4% · 37th percentile
  15. 2026-10-31 16:33 UTCEPSS rescoreEPSS 0.4% · 37th percentile
  16. 2026-10-30 16:35 UTCEPSS rescoreEPSS 0.4% · 37th percentile
  17. 2026-10-30 01:55 UTCOSV refresh
  18. 2026-10-29 16:34 UTCEPSS rescoreEPSS 0.4% · 37th percentile
  19. 2026-10-28 16:33 UTCEPSS rescoreEPSS 0.4% · 37th percentile
  20. 2026-10-27 16:32 UTCEPSS rescoreEPSS 0.4% · 37th percentile
  21. 2026-10-26 16:32 UTCEPSS rescoreEPSS 0.4% · 37th percentile
  22. 2026-10-25 16:34 UTCEPSS rescoreEPSS 0.4% · 37th percentile
  23. 2026-10-25 13:58 UTCEchelonGraph re-scored
  24. 2026-10-24 16:33 UTCEPSS rescoreEPSS 0.4% · 36th percentile
  25. 2026-10-23 16:32 UTCEPSS rescoreEPSS 0.4% · 36th percentile
Show 75 more
  1. 2026-10-22 16:35 UTCEPSS rescoreEPSS 0.4% · 36th percentile
  2. 2026-10-22 13:47 UTCEchelonGraph re-scored
  3. 2026-10-22 13:47 UTCGHSA enrichmentGHSA-3hq8-r684-4qwf
  4. 2026-10-21 16:34 UTCEPSS rescoreEPSS 0.4% · 36th percentile
  5. 2026-10-20 16:33 UTCEPSS rescoreEPSS 0.4% · 36th percentile
  6. 2026-10-19 16:33 UTCEPSS rescoreEPSS 0.4% · 36th percentile
  7. 2026-10-18 16:33 UTCEPSS rescoreEPSS 0.4% · 36th percentile
  8. 2026-10-18 03:09 UTCEchelonGraph re-scored
  9. 2026-10-17 16:35 UTCEPSS rescoreEPSS 0.4% · 36th percentile
  10. 2026-10-16 16:44 UTCEPSS rescoreEPSS 0.4% · 36th percentile
  11. 2026-10-15 16:33 UTCEPSS rescoreEPSS 0.4% · 36th percentile
  12. 2026-10-14 16:33 UTCEPSS rescoreEPSS 0.4% · 36th percentile
  13. 2026-10-13 16:35 UTCEPSS rescoreEPSS 0.4% · 35th percentile
  14. 2026-10-12 16:35 UTCEPSS rescoreEPSS 0.4% · 35th percentile
  15. 2026-10-12 14:56 UTCEchelonGraph re-scored
  16. 2026-10-11 19:20 UTCEchelonGraph re-scored
  17. 2026-10-11 16:36 UTCEchelonGraph re-scored
  18. 2026-10-11 13:54 UTCEchelonGraph re-scored
  19. 2026-10-11 13:49 UTCEPSS rescoreEPSS 0.4% · 35th percentile
  20. 2026-10-10 20:00 UTCEPSS rescoreEPSS 0.4% · 35th percentile
  21. 2026-10-10 09:48 UTCEchelonGraph re-scored
  22. 2026-10-10 09:48 UTCGHSA enrichmentGHSA-3hq8-r684-4qwf
  23. 2026-10-09 20:07 UTCEPSS rescoreEPSS 0.4% · 35th percentile
  24. 2026-10-09 07:23 UTCEchelonGraph re-scored
  25. 2026-10-09 07:23 UTCGHSA enrichmentGHSA-3hq8-r684-4qwf
  26. 2026-10-08 17:13 UTCEPSS rescoreEPSS 0.4% · 35th percentile
  27. 2026-10-08 05:13 UTCEchelonGraph re-scored
  28. 2026-10-08 05:13 UTCGHSA enrichmentGHSA-3hq8-r684-4qwf
  29. 2026-10-07 23:48 UTCEPSS rescoreEPSS 0.4% · 35th percentile
  30. 2026-10-07 03:03 UTCEchelonGraph re-scored
  31. 2026-10-07 03:03 UTCGHSA enrichmentGHSA-3hq8-r684-4qwf
  32. 2026-10-06 15:18 UTCEPSS rescoreEPSS 0.4% · 35th percentile
  33. 2026-10-06 00:54 UTCEchelonGraph re-scored
  34. 2026-10-06 00:54 UTCGHSA enrichmentGHSA-3hq8-r684-4qwf
  35. 2026-10-05 17:43 UTCEPSS rescoreEPSS 0.4% · 35th percentile
  36. 2026-10-04 23:22 UTCEPSS rescoreEPSS 0.4% · 35th percentile
  37. 2026-10-04 19:39 UTCGHSA enrichmentGHSA-3hq8-r684-4qwf
  38. 2026-10-03 15:14 UTCEchelonGraph re-scored
  39. 2026-10-03 15:14 UTCGHSA enrichmentGHSA-3hq8-r684-4qwf
  40. 2026-10-03 14:26 UTCEPSS rescoreEPSS 0.4% · 35th percentile
  41. 2026-10-02 17:57 UTCEPSS rescoreEPSS 0.4% · 35th percentile
  42. 2026-10-02 09:23 UTCEchelonGraph re-scored
  43. 2026-10-02 09:23 UTCGHSA enrichmentGHSA-3hq8-r684-4qwf
  44. 2026-10-01 19:50 UTCEPSS rescoreEPSS 0.4% · 35th percentile
  45. 2026-10-01 07:14 UTCEchelonGraph re-scored
  46. 2026-10-01 07:14 UTCGHSA enrichmentGHSA-3hq8-r684-4qwf
  47. 2026-09-30 15:04 UTCEPSS rescoreEPSS 0.4% · 35th percentile
  48. 2026-09-30 05:05 UTCEchelonGraph re-scored
  49. 2026-09-30 05:04 UTCGHSA enrichmentGHSA-3hq8-r684-4qwf
  50. 2026-09-28 23:13 UTCEchelonGraph re-scored
  51. 2026-09-28 23:13 UTCGHSA enrichmentGHSA-3hq8-r684-4qwf
  52. 2026-09-28 13:52 UTCEPSS rescoreEPSS 0.4% · 35th percentile
  53. 2026-09-27 20:55 UTCEchelonGraph re-scored
  54. 2026-09-27 20:55 UTCGHSA enrichmentGHSA-3hq8-r684-4qwf
  55. 2026-09-27 13:48 UTCEPSS rescoreEPSS 0.4% · 35th percentile
  56. 2026-09-26 18:46 UTCEchelonGraph re-scored
  57. 2026-09-26 18:46 UTCGHSA enrichmentGHSA-3hq8-r684-4qwf
  58. 2026-09-26 15:59 UTCEPSS rescoreEPSS 0.4% · 35th percentile
  59. 2026-09-25 12:02 UTCEchelonGraph re-scored
  60. 2026-09-25 12:02 UTCGHSA enrichmentGHSA-3hq8-r684-4qwf
  61. 2026-09-24 14:04 UTCEPSS rescoreEPSS 0.4% · 34th percentile
  62. 2026-09-24 09:52 UTCEchelonGraph re-scored
  63. 2026-09-24 09:52 UTCGHSA enrichmentGHSA-3hq8-r684-4qwf
  64. 2026-09-23 17:54 UTCEPSS rescoreEPSS 0.3% · 22nd percentile
  65. 2026-09-23 07:43 UTCEchelonGraph re-scored
  66. 2026-09-23 07:43 UTCGHSA enrichmentGHSA-3hq8-r684-4qwf
  67. 2026-09-22 16:01 UTCEPSS rescoreEPSS 0.3% · 22nd percentile
  68. 2026-09-22 05:32 UTCEchelonGraph re-scored
  69. 2026-09-22 05:32 UTCGHSA enrichmentGHSA-3hq8-r684-4qwf
  70. 2026-09-21 21:09 UTCEPSS rescoreEPSS 0.3% · 22nd percentile
  71. 2026-09-21 03:23 UTCEchelonGraph re-scored
  72. 2026-09-21 03:23 UTCGHSA enrichmentGHSA-3hq8-r684-4qwf
  73. 2026-09-20 20:16 UTCEPSS rescoreEPSS 0.3% · 22nd percentile
  74. 2026-09-20 01:13 UTCEchelonGraph re-scored
  75. 2026-09-20 01:13 UTCGHSA enrichmentGHSA-3hq8-r684-4qwf

Frequently asked(5)

What is CVE-2026-81827?
CVE-2026-81827 is a medium-severity vulnerability; its CVE record was published on August 27, 2026. Affected versions of Flowintel incorrectly attempted to validate login email addresses by calling Email(email). That does not perform WTForms field validation; it merely constructs a validator object. Consequently, malformed attacker-controlled email input could continue through the login process…
When was the CVE record for CVE-2026-81827 published?
The CVE record for CVE-2026-81827 was published on August 27, 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 August 28, 2026; the record at its source may have been updated since.
Is CVE-2026-81827 actively exploited?
CVE-2026-81827 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.4% probability of exploitation in the next 30 days (38th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-81827?
CVE-2026-81827 has a CVSS base score of 6.9 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-81827?
An upstream fix for CVE-2026-81827 has been merged but is not yet in a tagged release. Until it ships, restrict network exposure of the affected system or apply the vendor's mitigation, then update to the release that contains the fix. The vendor advisories EchelonGraph has for CVE-2026-81827 are linked in the Vendor Advisories panel on this page.

Dependency Blast Radius

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