Bundled libwebp in imagecodecs vulnerableGHSA-94vc-p8w7-5p49
GHSA-94vc-p8w7-5p49 is a security vulnerability in imagecodecs. A fix is available for imagecodecs — see the affected versions and patch details below.
Real-World Exposure
imagecodecsReal-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
imagecodecs versions before v2023.9.18 bundled libwebp binaries in wheels that are vulnerable to CVE-2023-5129 (previously CVE-2023-4863). imagecodecs v2023.9.18 upgrades the bundled libwebp binary to v1.3.2.
Affected Packages
| Ecosystem | Package | Vulnerable range | Fix |
|---|---|---|---|
| 🐍PyPI | imagecodecs | all versions | 2023.9.18pip install --upgrade 'imagecodecs==2023.9.18' |
Detection & mitigation playbook
Open-source dependencyDetect
Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for imagecodecs, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.
Fix
Update imagecodecs to 2023.9.18 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms GHSA-94vc-p8w7-5p49 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-94vc-p8w7-5p49 in your dependencies?
Find it across PyPI, including transitive dependencies.