{"id":"CVE-2026-68513","summary":"OpenEXR: Heap buffer overflow in PyOpenEXR from literal/prefixed RGB channel name collision","details":"OpenEXR is the reference implementation and specification for the EXR image format, widely used in the motion picture industry. Versions 3.3.0 through 3.3.12 and 3.4.0 through 3.4.13 contain a heap buffer overflow in PyOpenEXR triggered by a channel-name key collision between literal and prefixed RGB channels. When separate_channels=false, PyOpenEXR maps each physical channel name through channelNameToRGBA() and coalesces the results into a shared RGB array. A crafted flat scanline EXR that contains both a literal channel such as left and prefixed channels such as left.R, left.G, and left.B causes these names to collide, so the wrapper reuses an undersized two-dimensional NumPy array for the coalesced RGB slices and writes out of bounds when OpenEXR.File(path) decodes the pixels. This issue is fixed in versions 3.3.13 and 3.4.14.","aliases":["GHSA-rw5h-3q4v-c3vc"],"modified":"2026-08-27T11:47:48.163075566Z","published":"2026-08-25T19:06:11.692Z","related":["openSUSE-SU-2026:11612-1"],"database_specific":{"cwe_ids":["CWE-122","CWE-787"],"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/68xxx/CVE-2026-68513.json","cna_assigner":"GitHub_M"},"references":[{"type":"ADVISORY","url":"https://github.com/AcademySoftwareFoundation/openexr/security/advisories/GHSA-rw5h-3q4v-c3vc"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/68xxx/CVE-2026-68513.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-68513"},{"type":"FIX","url":"https://github.com/AcademySoftwareFoundation/openexr/commit/c1f3ec0d91cfa5a8035ecd00920835ac76e01640"},{"type":"FIX","url":"https://github.com/AcademySoftwareFoundation/openexr/commit/d134e3cd81a2e343f2919e86bf949f576b1ab16a"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/academysoftwarefoundation/openexr","events":[{"introduced":"c7d3eac70ccde2c4ed484c6638b83ba872f71464"},{"fixed":"ca50a6bb1f64c4d53362e4b67aec33e67cb7d425"},{"introduced":"20a65852895894434bea88613f6d29ac8e88bd6e"},{"fixed":"777d231a179de1711d2a942810d9559216ab3f4c"}],"database_specific":{"extracted_events":[{"introduced":"3.3.0"},{"fixed":"3.3.13"},{"introduced":"3.4.0"},{"fixed":"3.4.14"}],"source":"AFFECTED_FIELD"}}],"versions":["v3.4.13-rc3","v3.4.13","v3.3.12-rc","v3.3.12","v3.3.11-rc3","v3.3.11","v3.4.13-rc2","v3.4.13-rc","v3.4.12","v3.4.12-rc2","v3.4.11-rc3","v3.4.11","v3.4.11-rc2","v3.4.11-rc","v3.4.10-rc","v3.4.10","v3.3.10-rc2","v3.3.10","v3.3.10-rc","v3.3.9-rc2","v3.3.9","v3.4.9","v3.3.9-rc","v3.3.8-rc","v3.3.8","v3.4.9-rc","v3.4.8-rc","v3.4.8","v3.4.7","v3.4.7-rc","v3.4.6","v3.4.6-rc","v3.3.7-rc4","v3.3.7","v3.4.5","v3.4.5-rc","v3.3.7-rc3","v3.3.7-rc2","v3.3.7-rc","v3.3.6","v3.4.4-rc2","v3.4.4","v3.4.4-rc","v3.4.3-rc3","v3.4.3","v3.3.6-rc4","v3.3.6-rc3","v3.4.3-rc2","v3.3.6-rc2","v3.4.3-rc","v3.3.6-rc","v3.3.5","v3.4.2-rc2","v3.4.2","v3.4.2-rc","v3.4.1-rc2","v3.4.1","v3.4.1-rc","v3.4.0","v3.3.5-rc3","v3.3.5-rc","v3.3.4-rc","v3.3.4","v3.3.3-rc1","v3.3.3","v3.3.3-rc","v3.3.2-rc4","v3.3.2","v3.3.2-rc3","v3.3.2-rc2","v3.3.2-rc","v3.3.1-rc","v3.3.1","v3.3.0-rc2","v3.3.0"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-68513.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:N/I:H/A:H"}]}