CVE-2026-76221

HIGHPre-NVD 8.88.8—
EchelonGraph scoreMEDIUM confidence

Score 8.8 from GitHub Security Advisory (severity: HIGH) published 2026-08-19. a secondary CVSS source baseline 8.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 4 sources updated this week
8.8EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 8.8Exploit: None knownExposed: 0

A fix is available — apply it.

GitPython before 3.1.58 contains a config-name injection vulnerability in the option-name validator that allows attackers to forge arbitrary git-config directives by injecting equals signs, hash symbols, and whitespace into option names. Attackers can inject malicious option names like 'sshCommand = touch /tmp/RCE #' to execute arbitrary commands via core.sshCommand or core.hooksPath on the next git operation.

CVSS v3
8.8
EG Score
8.8(medium)
EG Risk
40(Track)
EG Risk 40/100SSVC: 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%
Exploitation0% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
41%
KEV
Not listed

Published

August 19, 2026

Last Modified

September 2, 2026

Advisory Details (2)

Auto-updated Aug 19, 2026
🔬 Proof of concept available. Patch available. Sources: github.
generic

GitPython before 3.1.58 Config Injection via option-name | Advisories | VulnCheck

https://www.vulncheck.com/advisories/gitpython-before-config-injection-via-option-name
github Patch Available🟡 PoC Available

git-config OPTION-name injection via =/#/whitespace bypasses name validator, enabling forged core.sshCommand/hooksPath (RCE) · Advisory · gitpython-developers/GitPython · GitHub

https://github.com/gitpython-developers/GitPython/security/advisories/GHSA-jm78-9fvv-mhgr

Vendor Advisories for CVE-2026-76221(2)

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

Patch Availability(1)

Vendor / EcosystemFixed in / PatchReleasedSource
redhatpython3.12-gitpython-0:3.1.59-1.el9pc2026-09-03redhat

Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.

Affected Packages

(4 across 4 ecosystems)
Debian:12(1)
PackageVulnerable rangeFixed inDependents
python-git3.1.30-1 ... 3.1.61-1 (11 versions)——
Debian:13(1)
PackageVulnerable rangeFixed inDependents
python-git3.1.44-1, 3.1.45-1, 3.1.46-1, 3.1.50-1, 3.1.61-1——
Debian:14(1)
PackageVulnerable rangeFixed inDependents
python-git3.1.44-1, 3.1.45-1, 3.1.46-1, 3.1.50-13.1.61-1—
PyPI(1)
PackageVulnerable rangeFixed inDependents
gitpython0.1.7 ... 3.1.9 (110 versions)3.1.58—

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 37× in last 7d / 140× 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 149 total refreshes for this CVE.

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

Frequently asked(5)

What is CVE-2026-76221?
CVE-2026-76221 is a high vulnerability published on August 19, 2026. GitPython before 3.1.58 contains a config-name injection vulnerability in the option-name validator that allows attackers to forge arbitrary git-config directives by injecting equals signs, hash symbols, and whitespace into option names. Attackers can inject malicious option names like 'sshCommand…
When was CVE-2026-76221 disclosed?
CVE-2026-76221 was first published in the National Vulnerability Database on August 19, 2026, with the most recent update on September 2, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-76221 actively exploited?
CVE-2026-76221 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 59.2% of all scored CVEs.
What is the CVSS score of CVE-2026-76221?
CVE-2026-76221 has a CVSS v3 base score of 8.8 (NVD).
How do I remediate CVE-2026-76221?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-76221, 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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