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MEDIUM severity

Improper Restriction of Operations within the Bounds of a Memory Buffer in OpenCVGHSA-jcxv-2j3h-mg59

MEDIUMFix: opencv/opencv#10369

GHSA-jcxv-2j3h-mg59 is a medium-severity (CVSS 6.5) Buffer Overflow vulnerability in opencv-python. A fix is available for opencv-python — see the affected versions and patch details below.

Also known asCVE-2017-17760PYSEC-2026-2823PYSEC-2026-711
Published
Updated
Affected
2 pkgs
Patched
2 / 2
Exploits
None indexed
Exploitation data as of Oct 12, 2026 · OSV.dev, NVD, FIRST.org (EPSS)

EPSS Exploitation Probability

via FIRST.org ↗
2.3%probability of exploitation in next 30 days
Lower Risk+0.01%
Lower risk than most CVEs82th percentile — riskier than 82% of all scored CVEsHighest risk
0.96%1.55%2.15%2.75%1.5%2.3%Apr 26Aug 26Oct 26

Probability of exploitation in the next 30 days, from FIRST.org EPSS.

How urgent is this, really

GHSA-jcxv-2j3h-mg59 by exploitation likelihood (EPSS) against impact (CVSS). Outside the shaded patch-first corner.

Where this sits among everything scored

Of 385,738 CVEs with a current EPSS score, this one falls in the < 10% band (highlighted). Counts from FIRST.org, log-scaled.

Real-World Exposure

2 pkgs affected
🐍opencv-python🐍opencv-contrib-python

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

OpenCV 3.3.1 (corresponding with opencv-python and opencv-contrib-python 3.3.1.11) has a Buffer Overflow in the cv::PxMDecoder::readData function in grfmt_pxm.cpp, because an incorrect size value is used.

Affected Packages

2 total 2 fixed
EcosystemPackageVulnerable rangeFix
🐍PyPIopencv-pythonall versions3.4.0.12pip install --upgrade 'opencv-python==3.4.0.12'
🐍PyPIopencv-contrib-pythonall versions3.4.0.12pip install --upgrade 'opencv-contrib-python==3.4.0.12'

Affected Products

2 products · 4 configurations
OS
debian linuxdebian
3 versions
7.08.09.0
Application
opencvopencv
1 version
3.3.1

Detection & mitigation playbook

Open-source dependency

  1. Detect

    Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for opencv-python, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.

  2. Fix

    Update opencv-python to 3.4.0.12 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms GHSA-jcxv-2j3h-mg59 is resolved across your whole dependency graph.

  3. Workarounds

    Stop feeding it untrusted input: reject or quarantine files and payloads from unverified sources until you can upgrade, restrict accepted formats to the ones you actually need, and run the parsing or decoding step in a least-privileged sandbox or short-lived worker so a crash or corrupted read cannot reach the rest of the process.

Frequently Asked Questions

OpenCV 3.3.1 (corresponding with opencv-python and opencv-contrib-python 3.3.1.11) has a Buffer Overflow in the cv::PxMDecoder::readData function in grfmt_pxm.cpp, because an incorrect size value is used.
O3 Security · Impact-Aware SCA

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