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PYSEC-2026-1355

Exiv2 has quadratic performance in ICC profile parsing in JpegBase::readMetadata

Details

### Impact A denial-of-service was found in Exiv2 version v0.28.5: a quadratic algorithm in the ICC profile parsing code in `jpegBase::readMetadata()` can cause Exiv2 to run for a long time. Exiv2 is a command-line utility and C++ library for reading, writing, deleting, and modifying the metadata of image files. The denial-of-service is triggered when Exiv2 is used to read the metadata of a crafted jpg image file.

### Patches The bug is fixed in version v0.28.6.

### References Issue: https://github.com/Exiv2/exiv2/issues/3333 Fixes: https://github.com/Exiv2/exiv2/pull/3335 (main branch), https://github.com/Exiv2/exiv2/pull/3345 (0.28.x branch)

### For more information Please see our [security policy](https://github.com/Exiv2/exiv2/security/policy) for information about Exiv2 security.

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Affected packages

PyPI/exiv2
Introduced in: 0

No fixed version published yet for exiv2 (pip). Pin to a known-safe version or switch to an alternative.

References