High severity7.5NVD Advisory· Published Sep 18, 2026· Updated Sep 18, 2026
CVE-2026-84447
CVE-2026-84447
Description
libheif is a HEIF and AVIF file format decoder and encoder. In 1.23.1 and earlier, crafted grid, iovl, and iden reference graphs can repeatedly decode the same base image because processed_ids is copied per branch and ImageItem::decode_image() has no shared operation budget. This vulnerability is fixed in 1.23.2.
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Affected products
1- Range: <=1.23.1
Patches
Vulnerability mechanics
References
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