{"id":"CVE-2026-48977","aliases":[],"url":"https://o3.security/vulnerability/CVE-2026-48977","summary":"OpenSlide is a C library for reading whole slide image files. From 3.4.1 until 4.0.1, OpenSlide's parse_level0_xml() processing in src/openslide-vendor-ventana.c accepts nonpositive…","details":"OpenSlide is a C library for reading whole slide image files. From 3.4.1 until 4.0.1, OpenSlide's parse_level0_xml() processing in src/openslide-vendor-ventana.c accepts nonpositive row or column tile counts from a crafted Ventana BIF file. The invalid counts produce attacker-controlled relative memory offsets and allow arbitrary values to be written at those offsets, affecting all supported platforms and configurations and resulting in a crash or potential arbitrary code execution. This issue is fixed in version 4.0.1.","published":"2026-09-17T21:17:13.323","modified":"2026-09-17T21:17:13.323","cvss":null,"epss":null,"cisaKev":null,"exploitsKnown":null,"affectedPackages":[],"fix":{"url":"https://github.com/openslide/openslide/commit/2be88bd782d9fff46de8e56a99baca523e7917b3","label":"openslide/openslide@2be88bd"},"references":[{"type":"WEB","url":"https://github.com/openslide/openslide/commit/2be88bd782d9fff46de8e56a99baca523e7917b3"},{"type":"WEB","url":"https://github.com/openslide/openslide/pull/751"},{"type":"WEB","url":"https://github.com/openslide/openslide/releases/tag/v4.0.1"},{"type":"WEB","url":"https://github.com/openslide/openslide/security/advisories/GHSA-mxg2-48g7-fmwc"}],"provenance":{"sources":["OSV.dev","NVD","FIRST.org (EPSS)"],"lastVerified":"2026-09-17T21:17:13.323"}}