Out-of-bounds Read in OpenCV
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 in the function cv::predictOrderedcv::HaarEvaluator in modules/objdetect/src/cascadedetect.hpp, which leads to denial of service.
Affected software
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| Platform | Package | Vulnerable versions | Fixed in |
|---|---|---|---|
| Python (PyPI) | opencv-contrib-python | < 3.4.7.28, >= 4.0.0.21, < 4.1.1.26 | 3.4.7.28, 4.1.1.26 |
| Python (PyPI) | opencv-contrib-python-headless | < 3.4.7.28, >= 4.0.0.21, < 4.1.1.26 | 3.4.7.28, 4.1.1.26 |
| Python (PyPI) | opencv-python | < 3.4.7.28, >= 4.0.0.21, < 4.1.1.26 | 3.4.7.28, 4.1.1.26 |
| Python (PyPI) | opencv-python-headless | < 3.4.7.28, >= 4.0.0.21, < 4.1.1.26 | 3.4.7.28, 4.1.1.26 |
References
- https://nvd.nist.gov/vuln/detail/CVE-2019-14491
- https://github.com/opencv/opencv/issues/15125
- https://github.com/opencv/opencv-python
- https://github.com/opencv/opencv/compare/33b765d...4a7ca5a
- https://github.com/opencv/opencv/compare/371bba8...ddbd10c
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/HPFLN6QAX6SUA4XR4NMKKXX26H3TYCVQ
- https://pypi.org/project/opencv-contrib-python
- https://github.com/advisories/GHSA-fm39-cw8h-3p63
- https://pypi.org/project/opencv-python
- https://pypi.org/project/opencv-python-headless
- https://pypi.org/project/opencv-contrib-python-headless
- CVSS vector
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H- Weakness (CWE)
CWE-125- Platform
- Python (PyPI)
- Package
opencv-contrib-python, opencv-contrib-python-headless, opencv-python- Disclosed
- 12.10.2021
- Updated
- 11.10.2026 15:17
Sources and licenses
OSV / GitHub Advisory Database - PYSEC-2026-720 - PyPA Advisory Database; CC BY 4.0
OSV / GitHub Advisory Database - PYSEC-2026-2797 - PyPA Advisory Database; CC BY 4.0
OSV / GitHub Advisory Database - PYSEC-2026-2818 - PyPA Advisory Database; CC BY 4.0
OSV / GitHub Advisory Database - PYSEC-2026-2836 - PyPA Advisory Database; CC BY 4.0
OSV / GitHub Advisory Database - GHSA-fm39-cw8h-3p63 - CC BY 4.0
Vulnerability history: opencv-contrib-python-headless
All published vulnerabilities of this package (Python (PyPI)), newest first. Shows whether this is a one-off slip or a package that needs watching.
- Total entries
- 11
- First → latest
- 10.2021 08.2024
- Without a fix
- 2
- Exploited in attacks
- 0
Severity breakdown
- High 7
- Medium 3
- Unrated 1
Disclosures per year
- 2021: 9
- 2022: 0
- 2023: 1
- 2024: 1
- 2025: 0
- 2026: 0
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