CVE-2026-76220

HIGHPre-NVD 8.88.8—
EchelonGraph scoreHIGH 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

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

GitPython before 3.1.58 contains a command execution vulnerability in the check_unsafe_options guard that can be bypassed by combining a single-character kwarg with split_single_char_options=False. Attackers can supply a crafted kwargs dictionary to guarded methods like clone_from to emit a joined token parsed as --upload-pack, enabling arbitrary OS command execution at default allow_unsafe_options=False.

CVSS v3
8.8
EG Score
8.8(high)
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
38%
KEV
Not listed

Published

August 19, 2026

Last Modified

August 20, 2026

Advisory Details (2)

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

GitPython before 3.1.58 Command Execution via split_single_char_options | Advisories | VulnCheck

https://www.vulncheck.com/advisories/gitpython-before-command-execution-via-split-single-char-options
github Patch Available🟡 PoC Available

Unsafe git option guard bypass via split_single_char_options=False short-option token smuggling enables command execution · Advisory · gitpython-developers/GitPython · GitHub

https://github.com/gitpython-developers/GitPython/security/advisories/GHSA-wvpp-8hx9-p66j

Vendor Advisories for CVE-2026-76220(1)

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

Affected Packages

(1 across 1 ecosystem)
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 17× in last 7d / 17× 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. 2026-08-21 07:20 UTCEG score recompute
  2. 2026-08-21 07:20 UTCGHSA enrichment
  3. 2026-08-20 22:56 UTCEPSS rescore
  4. 2026-08-20 19:18 UTCEG score recompute
  5. 2026-08-20 19:18 UTCGHSA enrichment
  6. 2026-08-20 18:32 UTCEG score recompute
  7. 2026-08-20 18:32 UTCGHSA enrichment
  8. 2026-08-20 16:21 UTCGHSA enrichment
  9. 2026-08-20 04:19 UTCEG score recompute
  10. 2026-08-20 04:19 UTCGHSA enrichment
  11. 2026-08-20 04:08 UTCEG score recompute
  12. 2026-08-20 04:08 UTCGHSA enrichment
  13. 2026-08-20 02:28 UTCEG score recompute
  14. 2026-08-20 02:28 UTCGHSA enrichment
  15. 2026-08-19 14:26 UTCEG score recompute
  16. 2026-08-19 14:12 UTCEG score recompute
  17. 2026-08-19 14:12 UTCMITRE cvelistV5first tracked

Frequently asked(5)

What is CVE-2026-76220?
CVE-2026-76220 is a high vulnerability published on August 19, 2026. GitPython before 3.1.58 contains a command execution vulnerability in the checkunsafeoptions guard that can be bypassed by combining a single-character kwarg with splitsinglecharoptions=False. Attackers can supply a crafted kwargs dictionary to guarded methods like clonefrom to emit a joined token…
When was CVE-2026-76220 disclosed?
CVE-2026-76220 was first published in the National Vulnerability Database on August 19, 2026, with the most recent update on August 20, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-76220 actively exploited?
CVE-2026-76220 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 61.5% of all scored CVEs.
What is the CVSS score of CVE-2026-76220?
CVE-2026-76220 has a CVSS v3 base score of 8.8 (NVD).
How do I remediate CVE-2026-76220?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-76220, 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

See which npm, PyPI, Go, and Maven packages are affected by CVE-2026-76220

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