{"id":"CVE-2026-59181","title":"OpenImageIO is a toolset for reading, writing, and manipulating image files of any image file format relevant to VFX / animation","summary":"OpenImageIO is a toolset for reading, writing, and manipulating image files of any image file format relevant to VFX / animation. Prior to 3.0.20.0, 3.1.15.0, and 3.2.0.3-beta1, A crafted cineon file can supply a numberofelements value g…","severity":"medium","cvss":6.1,"cvssVector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:H","cwe":["CWE-121","CWE-787"],"vendor":"openimageio","product":"openimageio","affected":["openimageio < 3.0.20.0","openimageio >= 3.1.0.0, <= 3.1.15.0","openimageio = 3.2.0.0","openimageio = 3.2.0.2"],"patched":["openimageio 3.0.20.0"],"published":"2026-09-18","updated":"2026-09-29","sourceUpdated":"2026-09-29T18:57:09.487","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-59181","references":[{"url":"https://github.com/AcademySoftwareFoundation/OpenImageIO/commit/908f22f5528e88e5e96184c194caa26b54b2b85f","label":"security-advisories@github.com"},{"url":"https://github.com/AcademySoftwareFoundation/OpenImageIO/pull/5250","label":"security-advisories@github.com"},{"url":"https://github.com/AcademySoftwareFoundation/OpenImageIO/releases/tag/v3.0.20.0","label":"security-advisories@github.com"},{"url":"https://github.com/AcademySoftwareFoundation/OpenImageIO/releases/tag/v3.1.15.0","label":"security-advisories@github.com"},{"url":"https://github.com/AcademySoftwareFoundation/OpenImageIO/security/advisories/GHSA-xh8r-vmqq-56pp","label":"security-advisories@github.com"},{"url":"https://github.com/AcademySoftwareFoundation/OpenImageIO/security/advisories/GHSA-xh8r-vmqq-56pp","label":"134c704f-9b21-4f2e-91b3-4a467353bcc0"}],"tags":["nvd","cve.org","exploit-available"],"epss":0.00204,"epssPercentile":0.10249,"exploitAvailable":true,"ssvc":{"exploitation":"poc","automatable":"no","technicalImpact":"partial","timestamp":"2026-09-18T16:51:48.812161Z"},"ingestedAt":"2026-09-18T16:45:41.385Z","slug":"CVE-2026-59181","body":"## Overview\n\nOpenImageIO is a toolset for reading, writing, and manipulating image files of any image file format relevant to VFX / animation. Prior to 3.0.20.0, 3.1.15.0, and 3.2.0.3-beta1, A crafted cineon file can supply a numberofelements value greater than the format maximum of eight. cineoninput::open() uses that unchecked value as the loop bound while filling the fixed strings[8] array, writing pointers beyond the stack buffer and into adjacent state, resulting in memory corruption and denial of service. The affected implementation is identified by src/cineon.imageio/cineoninput.cpp, CineonInput::open(), numberOfElements, and strings[8], which define the relevant source path, functions, state, and trigger. This issue is fixed in versions 3.0.20.0, 3.1.15.0, and 3.2.0.3-beta1.\n\n## Affected\n\n- `openimageio < 3.0.20.0`\n- `openimageio >= 3.1.0.0, <= 3.1.15.0`\n- `openimageio = 3.2.0.0`\n- `openimageio = 3.2.0.2`\n\n## Remediation\n\nUpgrade past the affected range:\n\n- `openimageio 3.0.20.0`","depth":"twilight","depthScore":46,"depthScoreParts":{"impact":33.6,"likelihood":0,"exploitation":12,"ransomware":0},"changes":[{"seq":207047,"id":"CVE-2026-59181","ts":1789753636750,"field":"exploit_available","old":"false","new":"true"}]}