CVE-2026-54604
Severity not reportedOpenSlide is a C library for reading whole slide image files.
OpenSlide is a C library for reading whole slide image files. Prior to 4.0.1, a behavior change in libtiff 4.7.1 causes the indirect TIFF tile path in src/openslide-decode-tiff.c and _openslide_tiff_read_tile() to request a full-height destination for a partial bottom tile row, allowing uninitialized heap memory to enter pixel data returned by openslide_read_region(). A crafted but valid slide can trigger the issue in TIFF-based formats other than Hamamatsu NDPI when a network service renders attacker-provided slides. Successful extraction depends on pixel transparency handling and recompression, OpenSlide with libtiff 4.7.0 or earlier is not affected, and official binary builds 4.0.0.10 and 4.0.0.11 are affected. This issue is fixed in OpenSlide 4.0.1 and official binary build 4.0.0.12.
Affected products
Not reported by the source (unknown — not "none").
Weakness classification (CWE)
Source: NVD / CISA. “NVD-CWE-Other” and “NVD-CWE-noinfo” mean NVD could not assign a specific weakness.
Mitigation & advisories
No vendor advisory or patch reference tagged by NVD. Check the references below.
References
- https://github.com/openslide/openslide-bin/issues/433 security-advisories@github.com
- https://github.com/openslide/openslide-bin/pull/436 security-advisories@github.com
- https://github.com/openslide/openslide/commit/a4f0fb0ec462edcea97ff22288f606ac6cd370f5 security-advisories@github.com
- https://github.com/openslide/openslide/pull/706 security-advisories@github.com
- https://github.com/openslide/openslide/releases/tag/v4.0.1 security-advisories@github.com
- https://github.com/openslide/openslide/security/advisories/GHSA-f734-jv98-5677 security-advisories@github.com
- https://gitlab.com/libtiff/libtiff/-/work_items/791 security-advisories@github.com