{"id":"CVE-2026-66759","summary":"Gimp: out-of-bounds read in file-icns plugin causes information disclosure or crash on crafted icns images","details":"A flaw was found in the file-icns plugin in GIMP. When applying a decompressed mask during ICNS image processing, the plugin reads from the mask data buffer without verifying if the cursor exceeds the allocated resource size. If a crafted file contains a truncated mask resource, the icns_decompress function continues reading past the bounds of the buffer. This out-of-bounds read vulnerability results in information disclosure of heap contents, where memory contents are leaked as alpha channel pixel values, or a crash leading to a denial of service if unmapped memory is accessed.","modified":"2026-08-12T03:51:19.846585495Z","published":"2026-07-27T19:12:27.455Z","related":["ALSA-2026:50817","openSUSE-SU-2026:11449-1","openSUSE-SU-2026:21521-1"],"database_specific":{"cna_assigner":"redhat","cwe_ids":["CWE-125"],"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/66xxx/CVE-2026-66759.json","unresolved_ranges":[{"extracted_events":[{"introduced":"2.99.14"},{"fixed":"*"}],"source":"AFFECTED_FIELD"}]},"references":[{"type":"WEB","url":"https://access.redhat.com/downloads/content/package-browser/"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2026:50817"},{"type":"ADVISORY","url":"https://access.redhat.com/security/cve/CVE-2026-66759"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/66xxx/CVE-2026-66759.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-66759"},{"type":"REPORT","url":"https://bugzilla.redhat.com/show_bug.cgi?id=2507557"},{"type":"REPORT","url":"https://gitlab.gnome.org/GNOME/gimp/-/issues/16528"},{"type":"PACKAGE","url":"https://gitlab.gnome.org/GNOME/gimp"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/gnome/gimp","events":[{"introduced":"6ac8031c9555667e080fef0324fca9f28a02e5ab"},{"last_affected":"6987b3853c10517eb581deeb20572fb5f99a7086"}],"database_specific":{"cpe":["cpe:2.3:a:gimp:gimp:3.0.8:*:*:*:*:*:*:*","cpe:2.3:a:gimp:gimp:3.2.4:*:*:*:*:*:*:*"],"extracted_events":[{"introduced":"3.0.8"},{"last_affected":"3.0.8"},{"introduced":"3.2.4"},{"last_affected":"3.2.4"}],"source":"CPE_STRING"}}],"versions":["3.0.8","3.2.4"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-66759.json"}},{"ranges":[{"type":"GIT","repo":"https://gitlab.gnome.org/gnome/gimp","events":[{"introduced":"6ac8031c9555667e080fef0324fca9f28a02e5ab"},{"last_affected":"6987b3853c10517eb581deeb20572fb5f99a7086"}],"database_specific":{"source":"CPE_STRING","cpe":["cpe:2.3:a:gimp:gimp:3.0.8:*:*:*:*:*:*:*","cpe:2.3:a:gimp:gimp:3.2.4:*:*:*:*:*:*:*"],"extracted_events":[{"introduced":"3.0.8"},{"last_affected":"3.0.8"},{"introduced":"3.2.4"},{"last_affected":"3.2.4"}]}}],"versions":["3.0.8","3.2.4"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-66759.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:H"}]}