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🐍 PyPI
Not in CISA KEV
HIGH severity

GHSA-j7c2-rqm3-c97m

HIGH

GHSA-j7c2-rqm3-c97m is a high-severity (CVSS 8.8) Improper Input Validation vulnerability in mercurial. O3 Security confirms whether GHSA-j7c2-rqm3-c97m is actually reachable in your code before you act, and blocks exploitation at runtime until you patch.

Mercurial arbitrary code execution via a crafted git ext:: URL

Also known asCVE-2016-3068PYSEC-2016-26
Published
May 14, 2022
Updated
Sep 24, 2024
Affected
1 pkg
Patched
1 / 1
Exploits
None indexed
Exploitation data as of Sep 24, 2024 · OSV.dev, NVD, FIRST.org (EPSS)

Real-World Exposure

1 pkg affected
🐍mercurial

Real-time download stats are indexed for npm and PyPI packages. This vulnerability affects PyPI packages — download data is not available via public APIs for these ecosystems.

Description

Mercurial before 3.7.3 allows remote attackers to execute arbitrary code via a crafted git ext:: URL when cloning a subrepository.

Affected Packages

1 total 1 fixed
EcosystemPackageVulnerable rangeFix
🐍PyPImercurialall versions3.7.3

Detection & mitigation playbook

Open-source dependency
  1. Detect

    Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for mercurial. O3's reachability analysis confirms whether the vulnerable code path is actually invoked in your application, so you act on real exposure instead of every transitive match.

  2. Fix

    Update mercurial to 3.7.3 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms GHSA-j7c2-rqm3-c97m is resolved across your whole dependency graph.

  3. 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.

  4. How O3 protects you

    O3 pinpoints whether GHSA-j7c2-rqm3-c97m is reachable in your code and exactly where to fix it, then blocks exploitation in production at runtime until the patched version is deployed.

Tailored to GHSA-j7c2-rqm3-c97m. Runtime protection reduces exposure until a permanent patch is applied and verified — it complements patching, it doesn't replace it.

Frequently Asked Questions

Mercurial before 3.7.3 allows remote attackers to execute arbitrary code via a crafted git ext:: URL when cloning a subrepository.
O3 Security · Impact-Aware SCA

Is GHSA-j7c2-rqm3-c97m in your dependencies?

O3 detects GHSA-j7c2-rqm3-c97m across PyPI dependencies and uses function-level reachability to confirm whether the vulnerable code path is actually reachable — not just present. No false positives.

GHSA-j7c2-rqm3-c97m: mercurial Remote… | O3 Security