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🐍 PyPI

GHSA-3vpc-4p9p-47hc

curl_cffi bundles a version of libcurl affected by High Severity vulnerability

Published
Oct 22, 2024
Updated
Dec 2, 2024
Affected
1 pkg
Patched
1 / 1
Exploits
None indexed

Blast Radius

1 pkg affected
🐍curl-cffi

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

Summary

curl_cffi is potentially affected by High Severity vulnerability (CVE-2023-38545) in libcurl<8.4.0

Details

HIGH severity vulnerability in curl and libcurl: announcement Details are still unknown, but seems it will be a major issue as it's advertised by curl devs as "probably the worst curl security flaw in a long time". A patched version (8.4.0) and details will be published around 06:00 UTC on October 11. curl_cffi wheels on PyPI ship with libcurl 7.84.0

PoC

https://inspector.pypi.io/project/curl-cffi/0.5.10b2/packages/56/ae/eb7d39ad234f1f44650b910757d5aa696feff413d327c8328223ce78cb76/curl_cffi-0.5.10b2-cp37-abi3-manylinux_2_17_aarch64.manylinux2014_aarch64.whl/curl_cffi/include/curl/curlver.h

Resolution

Versions after 0.7 bundles with libcurl>=8.5, which is not affected by this issue.

Affected Packages

1 total 1 fixed
EcosystemPackageVulnerable rangeFix
🐍PyPIcurl-cffiall versions0.7.0b6

Detection & mitigation playbook

Open-source dependency
  1. Detect

    Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for curl-cffi. 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 curl-cffi to 0.7.0b6 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms GHSA-3vpc-4p9p-47hc 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-3vpc-4p9p-47hc 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-3vpc-4p9p-47hc. Runtime protection reduces exposure until a permanent patch is applied and verified — it complements patching, it doesn't replace it.

Frequently Asked Questions

### Summary curl_cffi is potentially affected by High Severity vulnerability (CVE-2023-38545) in libcurl<8.4.0 ### Details HIGH severity vulnerability in curl and libcurl: [announcement](https://github.com/curl/curl/discussions/12026#discussioncomment-7195548) Details are still unknown, but seems it will be a major issue as it's advertised by curl devs as "_probably the worst curl security flaw in a long time_". A patched version (8.4.0) and details will be published around 06:00 UTC on October 11. curl_cffi wheels on PyPI ship with libcurl 7.84.0 ### PoC [https://inspector.pypi.io/project/c
O3 Security · Impact-Aware SCA

Is GHSA-3vpc-4p9p-47hc in your dependencies?

O3 detects GHSA-3vpc-4p9p-47hc across PyPI dependencies and uses function-level reachability to confirm whether the vulnerable code path is actually reachable — not just present. No false positives.