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High, CVSS 8.8amended

Out-of-bounds Write in OpenCV

CVE-2019-5063GHSA-m6vm-8g8v-xfjh

What to do

Vendor response not established. Follow the primary source's mitigation guidance and check back for a fix.

This page has no inventory attached, so it cannot say whether you are affected. A vendor fix is not proof that your deployment is fixed.

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Affected packages

  • PyPI opencv-python-headless

    Affected
    <= 4.1.0.25
    Fixed in
    no fixed version recorded

  • PyPI opencv-contrib-python-headless

    Affected
    <= 4.1.0.25
    Fixed in
    no fixed version recorded

  • PyPI opencv-python

    Affected
    <= 4.1.0.25
    Fixed in
    no fixed version recorded

  • PyPI opencv-contrib-python

    Affected
    <= 4.1.0.25
    Fixed in
    no fixed version recorded

Sources

Severity and exploitation
Exploitation
No confirmed exploitation recorded. Patch Next marks exploitation only from CISA KEV.
CVSS
8.8 · CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
EPSS
  • CVE-2019-5063: 21.11% estimated exploitation activity in the next 30 days; percentile 97.58 (FIRST EPSS, 2026-11-03). This is a model estimate, not proof of exploitation or customer exposure.
Source description

As published by the source; long descriptions are shortened.

An exploitable heap buffer overflow vulnerability exists in the data structure persistence functionality of OpenCV 4.1.0 (corresponds with OpenCV-Python 4.1.0.25). A specially crafted XML file can cause a buffer overflow, resulting in multiple heap corruptions and potential code execution. An attacker can provide a specially crafted file to trigger this vulnerability.

Dates and revisions
Published by the source
Last modified by the source
Source last checked
  1. Revision 2 · amended ·

    Amended from ghsa record GHSA-m6vm-8g8v-xfjh

  2. Revision 1 · created ·

    Published from osv record GHSA-m6vm-8g8v-xfjh

Agent brief

Preview the exact text before you copy it. Commands are read-only suggestions; review them before running anything.

# Patch Next advisory brief: CVE-2019-5063

Advisory: Out-of-bounds Write in OpenCV
IDs: CVE-2019-5063, GHSA-m6vm-8g8v-xfjh
Record: https://patchnext.com/advisories/cve-2019-5063 (revision 2, source checked 26 Oct 2026, 13:11 UTC)
Inventory: none attached. This brief comes from a public page and does not say whether any deployment is affected.
Severity: High (CVSS 8.8)
Exploitation: no confirmed exploitation recorded. Patch Next confirms exploitation only from CISA KEV.
Vendor response: Vendor response not established. A vendor fix does not mean a deployment is fixed.

## Affected components
- PyPI opencv-python-headless: affected <= 4.1.0.25
- PyPI opencv-contrib-python-headless: affected <= 4.1.0.25
- PyPI opencv-python: affected <= 4.1.0.25
- PyPI opencv-contrib-python: affected <= 4.1.0.25

## Suggested inspection (read-only)
- `python -m pip show opencv-python-headless`: prints the installed version. Run with the environment that serves production active.
- `python -m pip show opencv-contrib-python-headless`: prints the installed version. Run with the environment that serves production active.
- `python -m pip show opencv-python`: prints the installed version. Run with the environment that serves production active.
- `python -m pip show opencv-contrib-python`: prints the installed version. Run with the environment that serves production active.

## Supported action
No complete vendor fix is recorded. Follow the primary source's mitigation guidance and check this record again before closing anything.

## Required regression checks
- Run the test suite and a production build.
- Exercise the features that depend on opencv-python-headless, opencv-contrib-python-headless, opencv-python, opencv-contrib-python.
- Repeat the inspection and confirm that only fixed versions remain installed.

## Rollback considerations
- Keep the previous lockfile and deployment artifact. Rolling back reinstates the vulnerable version, so apply any documented mitigation while you fix forward.

## Unresolved questions
- Which deployments run an affected version?
- Exploitation status can change. Check again before lowering the priority.
- Mark the work resolved only after the fixed version is verified in production.

## Sources
- Verified: https://osv.dev/vulnerability/GHSA-m6vm-8g8v-xfjh (OSV record GHSA-m6vm-8g8v-xfjh lists affected ranges: PyPI opencv-python >=0 =0 =0 =0 <=4.1.0.25)
- Verified: https://github.com/advisories/GHSA-m6vm-8g8v-xfjh (GitHub-reviewed advisory GHSA-m6vm-8g8v-xfjh lists affected ranges: PyPI opencv-python >=0 =0 =0 =0 <=4.1.0.25)

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