CVE-2025-23369

HIGHNVD 8.88.8—
EchelonGraph scoreMEDIUM confidence

Score 8.8 from GitHub Security Advisory published 2025-01-21. NVD baseline CVSS 8.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
Elevated
8.8EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 2%CVSS: 8.8Exploit: Elevated riskExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

An improper verification of cryptographic signature vulnerability was identified in GitHub Enterprise Server that allowed signature spoofing for unauthorized internal users. Instances not utilizing SAML single sign-on or where the attacker is not already an existing user were not impacted. This vulnerability affected all versions of GitHub Enterprise Server prior to 3.12.14, 3.13.10, 3.14.7, 3.15.2, and 3.16.0. This vulnerability was reported via the GitHub Bug Bounty program.

CVSS v3
8.8
EG Score
8.8(medium)
EG Risk
56(Track)
EG Risk 56/100SSVC: Track

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
Severity88% × 45%
Exploitation40% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
2%
EPSS %ILE
75%
KEV
Not listed

Published

January 21, 2025

Last Modified

September 5, 2025

Advisory Details (4)

Auto-updated Aug 8, 2026
Patch available.
generic

Release notes - GitHub Enterprise Server 3.15 Docs

https://docs.github.com/en/[email protected]/admin/release-notes#3.15.2
generic

Release notes - GitHub Enterprise Server 3.14 Docs

https://docs.github.com/en/[email protected]/admin/release-notes#3.14.7
generic

Release notes - GitHub Enterprise Server 3.13 Docs

https://docs.github.com/en/[email protected]/admin/release-notes#3.13.10
generic Patch Available

Release notes - GitHub Enterprise Server 3.12 Docs

https://docs.github.com/en/[email protected]/admin/release-notes#3.12.14

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 5× in last 7d / 26× 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 135 total refreshes for this CVE.

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

Publicly available exploits

(1 reference)

Working exploit code is in the public domain (1 GitHub PoC). Defenders should treat patch urgency accordingly — public PoCs typically lead to mass-exploitation within 24-72 hours.

  • GitHub PoChakivvi/CVE-2025-23369
    First seen Feb 8, 2025

    GitHub Entreprise Server SAML authentication bypass (CVE-2025-23369) exploit

    Open source ↗

Frequently asked(5)

What is CVE-2025-23369?
CVE-2025-23369 is a high vulnerability published on January 21, 2025. An improper verification of cryptographic signature vulnerability was identified in GitHub Enterprise Server that allowed signature spoofing for unauthorized internal users. Instances not utilizing SAML single sign-on or where the attacker is not already an existing user were not impacted. This…
When was CVE-2025-23369 disclosed?
CVE-2025-23369 was first published in the National Vulnerability Database on January 21, 2025, with the most recent update on September 5, 2025. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2025-23369 actively exploited?
CVE-2025-23369 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 2% probability of exploitation in the next 30 days, which ranks it in the top 25.2% of all scored CVEs.
What is the CVSS score of CVE-2025-23369?
CVE-2025-23369 has a CVSS v3 base score of 8.8 (NVD).
How do I remediate CVE-2025-23369?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2025-23369, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

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