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🐍 PyPI

GHSA-f9pm-4g9p-6vm3

HIGH

Bundled libwebp in pywebp vulnerable

Published
Oct 6, 2023
Updated
Dec 1, 2024
Affected
1 pkg
Patched
1 / 1
Exploits
None indexed

Blast Radius

1 pkg affected
🐍webp

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

Impact

pywebp versions before v0.3.0 bundled libwebp binaries in wheels that are vulnerable to CVE-2023-4863. The vulnerability was a heap buffer overflow which allowed a remote attacker to perform an out of bounds memory write.

Patches

The problem has been patched upstream in libwebp 1.3.2. pywebp was updated to bundle a patched version of libwebp in v0.3.0.

Workarounds

No known workarounds without upgrading.

References

Affected Packages

1 total 1 fixed
EcosystemPackageVulnerable rangeFix
🐍PyPIwebpall versions0.3.0

Detection & mitigation playbook

Open-source dependency
  1. Detect

    Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for webp. 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 webp to 0.3.0 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms GHSA-f9pm-4g9p-6vm3 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-f9pm-4g9p-6vm3 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-f9pm-4g9p-6vm3. Runtime protection reduces exposure until a permanent patch is applied and verified — it complements patching, it doesn't replace it.

Frequently Asked Questions

### Impact pywebp versions before v0.3.0 bundled libwebp binaries in wheels that are vulnerable to CVE-2023-4863. The vulnerability was a heap buffer overflow which allowed a remote attacker to perform an out of bounds memory write. ### Patches The problem has been patched upstream in libwebp 1.3.2. pywebp was updated to bundle a patched version of libwebp in v0.3.0. ### Workarounds No known workarounds without upgrading. ### References - https://www.rezilion.com/blog/rezilion-researchers-uncover-new-details-on-severity-of-google-chrome-zero-day-vulnerability-cve-2023-4863/ - https://nvd.ni
O3 Security · Impact-Aware SCA

Is GHSA-f9pm-4g9p-6vm3 in your dependencies?

O3 detects GHSA-f9pm-4g9p-6vm3 across PyPI dependencies and uses function-level reachability to confirm whether the vulnerable code path is actually reachable — not just present. No false positives.