CVE-2026-19118

HIGHNVD 7.57.5—
EchelonGraph scoreHIGH confidence

Score 7.5 from GitHub Security Advisory (severity: HIGH) published 2026-09-02. NVD baseline CVSS 7.5; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
Trending — 3 sources updated this week
7.5EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 1%CVSS: 7.5Exploit: None knownExposed: 0

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

A time-of-check time-of-use race condition vulnerability was identified in GitHub Enterprise Server that allowed remote code execution. Exploitation required an authenticated user with write access to a repository and precise timing of concurrent upload requests. This vulnerability affected all versions of GitHub Enterprise Server prior to 3.22 and was fixed in versions 3.17.20, 3.18.14, 3.19.11, 3.20.7, and 3.21.5. This vulnerability was reported via the GitHub Bug Bounty program.

CVSS v3
7.5
EG Score
7.5(high)
EG Risk
34(Track)
EG Risk 34/100SSVC: 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
Severity75% × 45%
Exploitation1% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
1%
EPSS %ILE
44%
KEV
Not listed

Published

September 1, 2026

Last Modified

September 8, 2026

Advisory Details (5)

Auto-updated Sep 1, 2026
No patch confirmed yet.
generic

Release notes - GitHub Enterprise Server 3.21 Docs

https://docs.github.com/en/[email protected]/admin/release-notes#3.21.5
generic

Release notes - GitHub Enterprise Server 3.20 Docs

https://docs.github.com/en/[email protected]/admin/release-notes#3.20.7
generic

Release notes - GitHub Enterprise Server 3.19 Docs

https://docs.github.com/en/[email protected]/admin/release-notes#3.19.11
generic

Release notes - GitHub Enterprise Server 3.18 Docs

https://docs.github.com/en/[email protected]/admin/release-notes#3.18.14
generic

Release notes - GitHub Enterprise Server 3.17 Docs

https://docs.github.com/en/[email protected]/admin/release-notes#3.17.20

Vendor Advisories for CVE-2026-19118(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 23× in last 7d / 72× 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.

  1. 2026-09-19 14:22 UTCGHSA enrichment
  2. 2026-09-19 01:48 UTCEG score recompute
  3. 2026-09-19 01:48 UTCGHSA enrichment
  4. 2026-09-18 19:27 UTCEPSS rescore
  5. 2026-09-18 13:15 UTCGHSA enrichment
  6. 2026-09-18 00:41 UTCEG score recompute
  7. 2026-09-18 00:41 UTCGHSA enrichment
  8. 2026-09-17 12:07 UTCGHSA enrichment
  9. 2026-09-16 23:33 UTCEG score recompute
  10. 2026-09-16 23:33 UTCGHSA enrichment
  11. 2026-09-16 14:07 UTCEPSS rescore
  12. 2026-09-16 10:59 UTCEG score recompute
  13. 2026-09-16 10:59 UTCGHSA enrichment
  14. 2026-09-16 05:14 UTCEPSS rescore
  15. 2026-09-15 22:25 UTCGHSA enrichment
  16. 2026-09-15 09:49 UTCEG score recompute
  17. 2026-09-15 09:49 UTCGHSA enrichment
  18. 2026-09-14 21:15 UTCGHSA enrichment
  19. 2026-09-14 08:41 UTCGHSA enrichment
  20. 2026-09-13 20:07 UTCEG score recompute
  21. 2026-09-13 20:07 UTCGHSA enrichment
  22. 2026-09-13 16:46 UTCEPSS rescore
  23. 2026-09-13 07:33 UTCGHSA enrichment
  24. 2026-09-12 18:58 UTCEG score recompute
  25. 2026-09-12 18:58 UTCGHSA enrichment
Show 47 more
  1. 2026-09-12 15:00 UTCEPSS rescore
  2. 2026-09-12 06:24 UTCGHSA enrichment
  3. 2026-09-11 17:50 UTCEG score recompute
  4. 2026-09-11 17:50 UTCGHSA enrichment
  5. 2026-09-11 14:52 UTCEPSS rescore
  6. 2026-09-11 09:36 UTCEPSS rescore
  7. 2026-09-11 05:16 UTCGHSA enrichment
  8. 2026-09-10 16:42 UTCEG score recompute
  9. 2026-09-10 16:42 UTCGHSA enrichment
  10. 2026-09-10 09:34 UTCEPSS rescore
  11. 2026-09-10 04:08 UTCGHSA enrichment
  12. 2026-09-09 15:32 UTCGHSA enrichment
  13. 2026-09-09 02:53 UTCEG score recompute
  14. 2026-09-09 02:53 UTCGHSA enrichment
  15. 2026-09-08 22:00 UTCEPSS rescore
  16. 2026-09-08 14:20 UTCEG score recompute▼ 0.20
  17. 2026-09-08 14:20 UTCGHSA enrichment
  18. 2026-09-08 13:25 UTCNVD updateCVSS v3 → 7.5
  19. 2026-09-08 10:01 UTCGHSA enrichment
  20. 2026-09-07 21:25 UTCEG score recompute
  21. 2026-09-07 21:25 UTCGHSA enrichment
  22. 2026-09-07 16:01 UTCEPSS rescore
  23. 2026-09-07 08:51 UTCGHSA enrichment
  24. 2026-09-06 20:14 UTCEG score recompute
  25. 2026-09-06 20:14 UTCGHSA enrichment
  26. 2026-09-06 13:47 UTCEPSS rescore
  27. 2026-09-06 07:40 UTCGHSA enrichment
  28. 2026-09-05 19:06 UTCEG score recompute
  29. 2026-09-05 19:06 UTCGHSA enrichment
  30. 2026-09-05 06:32 UTCGHSA enrichment
  31. 2026-09-04 17:56 UTCEG score recompute
  32. 2026-09-04 17:56 UTCGHSA enrichment
  33. 2026-09-04 05:22 UTCEG score recompute
  34. 2026-09-04 05:22 UTCGHSA enrichment
  35. 2026-09-04 05:06 UTCEPSS rescore
  36. 2026-09-03 16:45 UTCGHSA enrichment
  37. 2026-09-03 04:10 UTCGHSA enrichment
  38. 2026-09-02 15:31 UTCGHSA enrichment
  39. 2026-09-02 14:29 UTCEG score recompute
  40. 2026-09-02 14:28 UTCGHSA enrichment
  41. 2026-09-02 14:11 UTCEPSS rescore
  42. 2026-09-02 13:34 UTCEG score recompute
  43. 2026-09-02 13:34 UTCGHSA enrichment
  44. 2026-09-02 10:59 UTCGHSA enrichment
  45. 2026-09-01 22:19 UTCEG score recompute
  46. 2026-09-01 21:58 UTCEG score recompute
  47. 2026-09-01 21:57 UTCMITRE cvelistV5first tracked

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-19118?
CVE-2026-19118 is a high vulnerability published on September 1, 2026. A time-of-check time-of-use race condition vulnerability was identified in GitHub Enterprise Server that allowed remote code execution. Exploitation required an authenticated user with write access to a repository and precise timing of concurrent upload requests. This vulnerability affected all…
When was CVE-2026-19118 disclosed?
CVE-2026-19118 was first published in the National Vulnerability Database on September 1, 2026, with the most recent update on September 8, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-19118 actively exploited?
CVE-2026-19118 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 1% probability of exploitation in the next 30 days, which ranks it in the top 56.3% of all scored CVEs.
What is the CVSS score of CVE-2026-19118?
CVE-2026-19118 has a CVSS v3 base score of 7.5 (NVD).
How do I remediate CVE-2026-19118?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-19118, 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.

Dependency Blast Radius

Explore the affected products and dependency analysis for CVE-2026-19118

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