CVE-2026-74869

HIGHPre-NVD 7.77.7—
EchelonGraph scoreMEDIUM confidence

Score 7.7 from GitHub Security Advisory (severity: HIGH) published 2026-08-17. A secondary CVSS source baseline 7.7; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 3 sources updated this week
7.7EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0.4%CVSS: 7.7Exploit: None knownExposed services: Not assessed

A fix is available — apply it.

stoatchat before 0.15.0 contains a missing authorization vulnerability in the Subscribe message handler that allows authenticated attackers to enumerate members and monitor profile updates of private servers without membership. Attackers can subscribe to any server's member-update topic by sending a Subscribe message with an arbitrary server ID, receiving live UserUpdate events including display names, avatars, and status changes for members they should not have access to.

CVSS v3
7.7
EG Score
7.7HIGHmedium confidence
EG Risk
39
EG Risk 39/100CISA SSVC

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity77% × 45%
Exploitation0% × 40%
Automatability30% × 15%
CISA SSVC: Track at low or medium mission impact; Track or Attend at high (mission-essential systems).
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
0.4%
EPSS %ILE
26th
KEV
Not listed

CISA SSVCTrack at low or medium mission impact; Track or Attend at high (mission-essential systems).

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

Exploitation none (no KEV listing, exploit record or EPSS ≥ 50%) · Automatable unknown (not published for this CVE) · Technical impact partial (CVSS below 9.0). Mission impact is CISA's Mission & Well-being decision point, and only you can judge it: high means the affected system is essential to your organisation's mission, or its compromise could cause irreversible harm to people. CISA's decision table

Published

August 17, 2026

Last Modified

September 24, 2026

Advisory Details (2)

Auto-updated Aug 17, 2026
🔬 Proof of concept available. Patch available. Sources: github.
generic

stoatchat before 0.15.0 Missing Authorization via Subscribe | Advisories | VulnCheck

https://www.vulncheck.com/advisories/stoatchat-before-missing-authorization-via-subscribe
github Patch Available🟡 PoC Available

Missing authorization on Bonfire `Subscribe` — cross‑server member enumeration & profile/status surveillance (ban‑evasion) · Advisory · stoatchat/stoatchat · GitHub

https://github.com/stoatchat/stoatchat/security/advisories/GHSA-jj3j-9qr7-jgfc

Vendor Advisories for CVE-2026-74869(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 20× in last 7d / 97× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

Showing the most recent 100 of 171 total refreshes for this CVE.

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

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Frequently asked(5)

What is CVE-2026-74869?
CVE-2026-74869 is a high vulnerability published on August 17, 2026. stoatchat before 0.15.0 contains a missing authorization vulnerability in the Subscribe message handler that allows authenticated attackers to enumerate members and monitor profile updates of private servers without membership. Attackers can subscribe to any server's member-update topic by sending…
When was CVE-2026-74869 disclosed?
CVE-2026-74869 was first published on August 17, 2026, with the most recent update on September 24, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-74869 actively exploited?
CVE-2026-74869 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.4% probability of exploitation in the next 30 days (26th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-74869?
CVE-2026-74869 has a CVSS base score of 7.7 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-74869?
A fix for CVE-2026-74869 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2026-74869 are linked in the Vendor Advisories panel on this page.

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