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High, CVSS 7.8amended

Out-of-bounds Write in OpenCV

CVE-2019-9423GHSA-8849-5h85-98qw

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
    <= 4.1.1.26
    Fixed in
    no fixed version recorded

  • PyPI opencv-contrib-python-headless

    Affected
    <= 4.1.1.26
    Fixed in
    no fixed version recorded

  • PyPI opencv-python

    Affected
    <= 4.1.1.26
    Fixed in
    no fixed version recorded

  • PyPI opencv-contrib-python

    Affected
    <= 4.1.1.26
    Fixed in
    no fixed version recorded

Sources

Severity and exploitation
Exploitation
No confirmed exploitation recorded. Patch Next marks exploitation only from CISA KEV.
CVSS
7.8 · CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
EPSS
  • CVE-2019-9423: 0.29% estimated exploitation activity in the next 30 days; percentile 21.79 (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.

In opencv calls that use libpng, there is a possible out of bounds write due to a missing bounds check. This could lead to local escalation of privilege with no additional execution privileges required. User interaction is not required for exploitation. Product: AndroidVersions: Android-10Android ID: A-110986616

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

    Amended from ghsa record GHSA-8849-5h85-98qw

  2. Revision 1 · created ·

    Published from osv record GHSA-8849-5h85-98qw

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-2019-9423

Advisory: Out-of-bounds Write in OpenCV
IDs: CVE-2019-9423, GHSA-8849-5h85-98qw
Record: https://patchnext.com/advisories/cve-2019-9423 (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 7.8)
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 <= 4.1.1.26
- PyPI opencv-contrib-python-headless: affected <= 4.1.1.26
- PyPI opencv-python: affected <= 4.1.1.26
- PyPI opencv-contrib-python: affected <= 4.1.1.26

## 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-8849-5h85-98qw (OSV record GHSA-8849-5h85-98qw lists affected ranges: PyPI opencv-python >=0 =0 =0 =0 <=4.1.1.26)
- Verified: https://github.com/advisories/GHSA-8849-5h85-98qw (GitHub-reviewed advisory GHSA-8849-5h85-98qw lists affected ranges: PyPI opencv-python >=0 =0 =0 =0 <=4.1.1.26)

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