PYSEC-2026-2800

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Import Source
https://github.com/pypa/advisory-database/blob/main/vulns/opencv-contrib-python/PYSEC-2026-2800.yaml
JSON Data
https://api.osv.dev/v1/vulns/PYSEC-2026-2800
Aliases
Published
2026-07-09T16:49:37Z
Modified
2026-07-13T16:42:38Z
Severity
  • 6.5 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:L CVSS Calculator
Summary
Out-of-bounds Read in OpenCV
Details

An out-of-bounds read was discovered in OpenCV before 4.1.1 (OpenCV-Python before 4.1.0.25). Specifically, variable coarsest_scale is assumed to be greater than or equal to finest_scale within the calc()/ocl_calc() functions in dis_flow.cpp. However, this is not true when dealing with small images, leading to an out-of-bounds read of the heap-allocated arrays Ux and Uy.

References

Affected packages

PyPI / opencv-contrib-python

Package

Name
opencv-contrib-python
View open source insights on deps.dev
Purl
pkg:pypi/opencv-contrib-python

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
4.1.0.25

Affected versions

3.*
3.4.2.17
3.4.3.18
3.4.4.19
3.4.5.20
3.4.6.27
3.4.7.28
3.4.8.29
3.4.9.31
3.4.9.33
3.4.10.35
3.4.10.37
3.4.11.39
3.4.11.41
3.4.11.43
3.4.11.45
3.4.13.47
3.4.14.51
3.4.14.53
3.4.15.55
3.4.16.57
3.4.16.59
3.4.17.61
3.4.17.63
3.4.18.65
4.*
4.0.0.21
4.0.1.23
4.0.1.24

Database specific

source
"https://github.com/pypa/advisory-database/blob/main/vulns/opencv-contrib-python/PYSEC-2026-2800.yaml"