CVE-2026-85626

HIGHPre-NVD 7.57.5—
EchelonGraph scoreHIGH confidence

Score 7.5 from GitHub Security Advisory (severity: HIGH) published 2026-09-04. a secondary CVSS source baseline 7.5; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 3 sources updated this weekElevated
7.5EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 7.5Exploit: Elevated riskExposed: 0

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

git-mcp-server 2.15.1 contains an argument injection vulnerability in the ref and object parameters of git_log, git_diff, and git_show tools that lack leading-dash validation. Attackers can inject git command-line options like --output= to write files outside the repository to arbitrary paths accessible by the process.

CVSS v3
7.5
EG Score
7.5(high)
EG Risk
65(Attend)
EG Risk 65/100SSVC: Attend

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%
Exploitation40% × 40%
Automatability100% × 15%
Action: Remediate soon — notable exploitation risk.
EPSS PROB
0%
EPSS %ILE
19%
KEV
Not listed

Published

September 4, 2026

Last Modified

September 8, 2026

Advisory Details (5)

Auto-updated Sep 4, 2026
No patch confirmed yet.
generic

git-mcp-server 2.15.1 Argument Injection via Git Ref Parameters | Advisories | VulnCheck

https://www.vulncheck.com/advisories/git-mcp-server-2.15.1-argument-injection-via-git-ref-parameters
generic

git-mcp-server/src/services/git/providers/cli/utils/command-builder.ts at v2.15.3 · cyanheads/git-mcp-server · GitHub

https://github.com/cyanheads/git-mcp-server/blob/v2.15.3/src/services/git/providers/cli/utils/command-builder.ts
generic

git-mcp-server/src/services/git/providers/cli/operations/commits/log.ts at v2.15.3 · cyanheads/git-mcp-server · GitHub

https://github.com/cyanheads/git-mcp-server/blob/v2.15.3/src/services/git/providers/cli/operations/commits/log.ts
generic

GitHub - cyanheads/git-mcp-server: A Git MCP server for AI agents. STDIO & Streamable HTTP. · GitHub

https://github.com/cyanheads/git-mcp-server
generic

Argument/option injection in git ref parameters leads to arbitrary file write (git_log / git_diff / git_show) · Issue #53 · cyanheads/git-mcp-server · GitHub

https://github.com/cyanheads/git-mcp-server/issues/53

Vendor Advisories for CVE-2026-85626(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 27× in last 7d / 61× 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 09:55 UTCGHSA enrichment
  2. 2026-09-18 21:23 UTCEG score recompute
  3. 2026-09-18 21:22 UTCGHSA enrichment
  4. 2026-09-18 19:28 UTCEPSS rescore
  5. 2026-09-18 08:25 UTCGHSA enrichment
  6. 2026-09-17 20:24 UTCEG score recompute
  7. 2026-09-17 20:24 UTCGHSA enrichment
  8. 2026-09-17 19:32 UTCEPSS rescore
  9. 2026-09-17 06:46 UTCGHSA enrichment
  10. 2026-09-16 18:31 UTCEG score recompute
  11. 2026-09-16 18:31 UTCGHSA enrichment
  12. 2026-09-16 14:09 UTCEPSS rescore
  13. 2026-09-16 06:30 UTCEG score recompute
  14. 2026-09-16 06:30 UTCGHSA enrichment
  15. 2026-09-16 05:15 UTCEPSS rescore
  16. 2026-09-15 18:30 UTCGHSA enrichment
  17. 2026-09-15 06:29 UTCEG score recompute
  18. 2026-09-15 06:29 UTCGHSA enrichment
  19. 2026-09-15 03:12 UTCEPSS rescore
  20. 2026-09-15 03:12 UTCEPSS rescore
  21. 2026-09-14 18:29 UTCGHSA enrichment
  22. 2026-09-14 06:24 UTCGHSA enrichment
  23. 2026-09-13 18:24 UTCEG score recompute
  24. 2026-09-13 18:24 UTCGHSA enrichment
  25. 2026-09-13 06:23 UTCGHSA enrichment
Show 36 more
  1. 2026-09-12 18:23 UTCEG score recompute
  2. 2026-09-12 18:23 UTCGHSA enrichment
  3. 2026-09-12 06:22 UTCGHSA enrichment
  4. 2026-09-11 18:21 UTCEG score recompute
  5. 2026-09-11 18:21 UTCGHSA enrichment
  6. 2026-09-11 14:53 UTCEPSS rescore
  7. 2026-09-11 14:53 UTCEPSS rescore
  8. 2026-09-11 06:20 UTCGHSA enrichment
  9. 2026-09-10 18:20 UTCEG score recompute
  10. 2026-09-10 18:20 UTCGHSA enrichment
  11. 2026-09-10 06:19 UTCGHSA enrichment
  12. 2026-09-09 18:18 UTCGHSA enrichment
  13. 2026-09-09 06:16 UTCEG score recompute
  14. 2026-09-09 06:16 UTCGHSA enrichment
  15. 2026-09-08 22:01 UTCEPSS rescore
  16. 2026-09-08 18:16 UTCEG score recompute
  17. 2026-09-08 18:16 UTCGHSA enrichment
  18. 2026-09-08 17:03 UTCEG score recompute
  19. 2026-09-08 17:03 UTCGHSA enrichment
  20. 2026-09-08 16:20 UTCGHSA enrichment
  21. 2026-09-08 03:34 UTCEG score recompute
  22. 2026-09-08 03:34 UTCGHSA enrichment
  23. 2026-09-07 15:32 UTCGHSA enrichment
  24. 2026-09-07 03:31 UTCGHSA enrichment
  25. 2026-09-06 15:29 UTCEG score recompute
  26. 2026-09-06 15:29 UTCGHSA enrichment
  27. 2026-09-06 13:48 UTCEPSS rescore
  28. 2026-09-06 03:28 UTCEG score recompute
  29. 2026-09-06 03:28 UTCGHSA enrichment
  30. 2026-09-05 15:31 UTCEPSS rescore
  31. 2026-09-05 15:27 UTCGHSA enrichment
  32. 2026-09-05 03:26 UTCEG score recompute
  33. 2026-09-05 03:26 UTCGHSA enrichment
  34. 2026-09-04 15:25 UTCEG score recompute
  35. 2026-09-04 14:45 UTCEG score recompute
  36. 2026-09-04 14:44 UTCMITRE cvelistV5first tracked

Frequently asked(5)

What is CVE-2026-85626?
CVE-2026-85626 is a high vulnerability published on September 4, 2026. git-mcp-server 2.15.1 contains an argument injection vulnerability in the ref and object parameters of gitlog, gitdiff, and git_show tools that lack leading-dash validation. Attackers can inject git command-line options like --output= to write files outside the repository to arbitrary paths…
When was CVE-2026-85626 disclosed?
CVE-2026-85626 was first published in the National Vulnerability Database on September 4, 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-2026-85626 actively exploited?
CVE-2026-85626 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0% probability of exploitation in the next 30 days, which ranks it in the top 80.6% of all scored CVEs.
What is the CVSS score of CVE-2026-85626?
CVE-2026-85626 has a CVSS v3 base score of 7.5 (NVD).
How do I remediate CVE-2026-85626?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-85626, 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

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