Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') in pycaresGHSA-c58j-88f5-h53f
MEDIUMGHSA-c58j-88f5-h53f is a medium-severity (CVSS 5.6) vulnerability in pycares. A fix is available for pycares — see the affected versions and patch details below.
Real-World Exposure
pycaresReal-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
Affected Packages
| Ecosystem | Package | Vulnerable range | Fix |
|---|---|---|---|
| 🐍PyPI | pycares | all versions | 4.2.0pip install --upgrade 'pycares==4.2.0' |
Detection & mitigation playbook
Open-source dependencyDetect
Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for pycares, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.
Fix
Update pycares to 4.2.0 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms GHSA-c58j-88f5-h53f 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.
Frequently Asked Questions
Is GHSA-c58j-88f5-h53f in your dependencies?
Find it across PyPI, including transitive dependencies.