GHSA-6vvc-c2m3-cjf3 is a critical-severity (CVSS 9.8) Improper Input Validation vulnerability in org.eclipse.jgit:org.eclipse.jgit. 1 public exploit or proof-of-concept reference is indexed, so weaponization risk is real. A fix is available for org.eclipse.jgit:org.eclipse.jgit — see the affected versions and patch details below.
EPSS Exploitation Probability
Probability of exploitation in the next 30 days, from FIRST.org EPSS.
How urgent is this, really
Where this sits among everything scored
Real-World Exposure
org.eclipse.jgit:org.eclipse.jgit🐍mercurialReal-time download stats are indexed for npm and PyPI packages. This vulnerability affects Maven, PyPI packages — download data is not available via public APIs for these ecosystems.
Description
Git before 1.8.5.6, 1.9.x before 1.9.5, 2.0.x before 2.0.5, 2.1.x before 2.1.4, and 2.2.x before 2.2.1 on Windows and OS X; Mercurial before 3.2.3 on Windows and OS X; Apple Xcode before 6.2 beta 3; mine all versions before 08-12-2014; libgit2 all versions up to 0.21.2; Egit all versions before 08-12-2014; and JGit all versions before 08-12-2014 allow remote Git servers to execute arbitrary commands via a tree containing a crafted .git/config file with (1) an ignorable Unicode codepoint, (2) a git~1/config representation, or (3) mixed case that is improperly handled on a case-insensitive filesystem.
Affected Packages
| Ecosystem | Package | Vulnerable range | Fix |
|---|---|---|---|
| ☕Maven | org.eclipse.jgit:org.eclipse.jgit | all versions | 3.5.3org.eclipse.jgit:org.eclipse.jgit:3.5.3 |
| 🐍PyPI | mercurial | all versions | 3.2.3pip install --upgrade 'mercurial==3.2.3' |
Affected Products
xcodeappleegiteclipsejgiteclipsegitgit-scmlibgit2libgit2mercurialmercurialResearch use only. For defensive security, authorized penetration testing, and academic research only. Never execute exploit code against systems without explicit written authorization.
Detection & mitigation playbook
Open-source dependencyDetect
Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for org.eclipse.jgit:org.eclipse.jgit, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.
Fix
Update org.eclipse.jgit:org.eclipse.jgit to 3.5.3 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms GHSA-6vvc-c2m3-cjf3 is resolved across your whole dependency graph.
Workarounds
If you can't upgrade right away: gate or disable the affected feature, validate untrusted input at the boundary, and avoid passing attacker-controlled data into the vulnerable path. O3's runtime protection blocks exploitation in production as an interim safeguard until the upgrade lands.
Fixing This On Your OS
If you run this on a Linux distribution, patch through your package manager against the distro's own security advisory below — it tracks the exact backported fix for your release, which can ship on a different timeline (and sometimes a different severity) than the upstream project.
Frequently Asked Questions
Is GHSA-6vvc-c2m3-cjf3 in your dependencies?
Find it across Maven, PyPI, including transitive dependencies.