NULL Pointer Dereference in OpenCV.

Exploitation

No confirmed exploitation recorded. Patch Next marks exploitation only from CISA KEV.

CVSS

7.5 · CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

EPSS

• CVE-2019-14493: 3.31% estimated exploitation activity in the next 30 days; percentile 88.56 (FIRST EPSS, 2026-11-03). This is a model estimate, not proof of exploitation or customer exposure.

As published by the source; long descriptions are shortened.

An issue was discovered in OpenCV before 4.1.1 (OpenCV-Python before 4.1.1.26). There is a NULL pointer dereference in the function cv::XMLParser::parse at modules/core/src/persistence.cpp.

Published by the source

12 Oct 2021, 22:21 UTC

Last modified by the source

10 Sep 2026, 03:49 UTC

Source last checked

26 Oct 2026, 13:11 UTC

1. Revision 2 · amended · 26 Oct 2026

   Amended from ghsa record GHSA-3448-vrgh-85xr

2. Revision 1 · created · 24 Oct 2026

   Published from osv record GHSA-3448-vrgh-85xr

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# Patch Next advisory brief: CVE-2019-14493

Advisory: NULL Pointer Dereference in OpenCV.
IDs: CVE-2019-14493, GHSA-3448-vrgh-85xr
Record: https://patchnext.com/advisories/cve-2019-14493 (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; opencv-contrib-python-headless 4.1.1.26; opencv-python 4.1.1.26; opencv-contrib-python 4.1.1.26. A vendor fix does not mean a deployment is fixed.

## Affected components
- PyPI opencv-python-headless: affected <= 4.1.0.25; fixed in 4.1.1.26
- PyPI opencv-contrib-python-headless: affected <= 4.1.0.25; fixed in 4.1.1.26
- PyPI opencv-python: affected <= 4.1.0.25; fixed in 4.1.1.26
- PyPI opencv-contrib-python: affected <= 4.1.0.25; fixed in 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
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-3448-vrgh-85xr (OSV record GHSA-3448-vrgh-85xr lists affected ranges: PyPI opencv-python >=0 =0 =0 =0 <4.1.1.26 (fixed))
- Verified: https://github.com/advisories/GHSA-3448-vrgh-85xr (GitHub-reviewed advisory GHSA-3448-vrgh-85xr lists affected ranges: PyPI opencv-python >=0 =0 =0 =0 <=4.1.0.25)

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