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High, CVSS 7.5amended

Out-of-bounds Read and Out-of-bounds Write in OpenCV

CVE-2019-14492GHSA-fw99-f933-rgh8

What to do

Vendor fix available. Upgrade each affected package to the fixed version on its release line (opencv-python-headless 4.1.1.26, 3.4.7.28; opencv-contrib-python-headless 4.1.1.26, 3.4.7.28; opencv-python 4.1.1.26, 3.4.7.28; opencv-contrib-python 4.1.1.26, 3.4.7.28), redeploy, then verify what is actually installed.

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

Sources

Severity and exploitation
Exploitation
No confirmed exploitation recorded. Patch Next marks exploitation only from CISA KEV.
CVSS
7.5 · CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
EPSS
  • CVE-2019-14492: 3.02% estimated exploitation activity in the next 30 days; percentile 87.44 (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 issue was discovered in OpenCV before 3.4.7 and 4.x before 4.1.1 (OpenCV-Python before 3.4.7.28 and 4.x before 4.1.1.26). There is an out of bounds read/write in the function HaarEvaluator::OptFeature::calc in modules/objdetect/src/cascadedetect.hpp, which leads to denial of service.

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

    Amended from ghsa record GHSA-fw99-f933-rgh8

  2. Revision 1 · created ·

    Published from osv record GHSA-fw99-f933-rgh8

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-2019-14492

Advisory: Out-of-bounds Read and Out-of-bounds Write in OpenCV
IDs: CVE-2019-14492, GHSA-fw99-f933-rgh8
Record: https://patchnext.com/advisories/cve-2019-14492 (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 7.5)
Exploitation: no confirmed exploitation recorded. Patch Next confirms exploitation only from CISA KEV.
Vendor response: Vendor fix available; fixed versions by package: opencv-python-headless 4.1.1.26, 3.4.7.28; opencv-contrib-python-headless 4.1.1.26, 3.4.7.28; opencv-python 4.1.1.26, 3.4.7.28; opencv-contrib-python 4.1.1.26, 3.4.7.28. A vendor fix does not mean a deployment is fixed.

## Affected components
- PyPI opencv-python-headless: affected <= 3.4.6.27; >= 4.0.0.21, <= 4.1.0.25; fixed in 4.1.1.26, 3.4.7.28
- PyPI opencv-contrib-python-headless: affected <= 3.4.6.27; >= 4.0.0.21, <= 4.1.0.25; fixed in 4.1.1.26, 3.4.7.28
- PyPI opencv-python: affected <= 3.4.6.27; >= 4.0.0.21, <= 4.1.0.25; fixed in 4.1.1.26, 3.4.7.28
- PyPI opencv-contrib-python: affected <= 3.4.6.27; >= 4.0.0.21, <= 4.1.0.25; fixed in 4.1.1.26, 3.4.7.28

## 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
Upgrade each affected component to a fixed version on its release line. For a transitive dependency, upgrade the parent package or add an override or constraint, then regenerate the lockfile. Redeploy every environment that ran an affected version.

## 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-fw99-f933-rgh8 (OSV record GHSA-fw99-f933-rgh8 lists affected ranges: PyPI opencv-python >=0 =4.0.0.21 =0 =4.0.0.21 =0 =4.0.0.21 =0 =4.0.0.21 <4.1.1.26 (fixed))
- Verified: https://github.com/advisories/GHSA-fw99-f933-rgh8 (GitHub-reviewed advisory GHSA-fw99-f933-rgh8 lists affected ranges: PyPI opencv-python >=0 =4.0.0.21 =0 =4.0.0.21 =0 =4.0.0.21 =0 =4.0.0.21 <=4.1.0.25)

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