{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-96644","assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","state":"PUBLISHED","assignerShortName":"GitHub_M","dateReserved":"2026-09-23T14:35:50.130Z","datePublished":"2026-10-21T20:54:43.537Z","dateUpdated":"2026-10-28T18:22:38.027Z"},"containers":{"cna":{"title":"Pillow: Heap over-read in WMF/EMF rendering via 16-bit dimension truncation (Windows builds)","problemTypes":[{"descriptions":[{"cweId":"CWE-125","lang":"en","description":"CWE-125: Out-of-bounds Read","type":"CWE"}]}],"metrics":[{"cvssV4_0":{"attackVector":"NETWORK","attackComplexity":"LOW","attackRequirements":"NONE","privilegesRequired":"NONE","userInteraction":"PASSIVE","vulnConfidentialityImpact":"LOW","vulnIntegrityImpact":"NONE","vulnAvailabilityImpact":"HIGH","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","subAvailabilityImpact":"NONE","baseScore":7.1,"baseSeverity":"HIGH","vectorString":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:L/VI:N/VA:H/SC:N/SI:N/SA:N","version":"4.0"}}],"references":[{"name":"https://github.com/python-pillow/Pillow/security/advisories/GHSA-9v9v-9qvf-h2hj","tags":["x_refsource_CONFIRM"],"url":"https://github.com/python-pillow/Pillow/security/advisories/GHSA-9v9v-9qvf-h2hj"},{"name":"https://github.com/python-pillow/Pillow/pull/10120","tags":["x_refsource_MISC"],"url":"https://github.com/python-pillow/Pillow/pull/10120"},{"name":"https://github.com/python-pillow/Pillow/commit/4cf46bee338304c5c8968fd7f132ba0d40c428b7","tags":["x_refsource_MISC"],"url":"https://github.com/python-pillow/Pillow/commit/4cf46bee338304c5c8968fd7f132ba0d40c428b7"},{"name":"https://github.com/python-pillow/Pillow/releases/tag/13.0.0","tags":["x_refsource_MISC"],"url":"https://github.com/python-pillow/Pillow/releases/tag/13.0.0"}],"affected":[{"vendor":"python-pillow","product":"Pillow","versions":[{"version":"< 13.0.0","status":"affected"}]}],"providerMetadata":{"orgId":"a0819718-46f1-4df5-94e2-005712e83aaa","shortName":"GitHub_M","dateUpdated":"2026-10-21T20:54:43.537Z"},"descriptions":[{"lang":"en","value":"Pillow is a Python imaging library. Prior to 13.0.0 on Windows, src/PIL/WmfImagePlugin.py passes unchecked 32-bit WMF or EMF dimensions to the native drawwmf handler in src/display.c. The handler sizes a DIB allocation from 16-bit-truncated bcWidth and bcHeight fields but copies pixel data using the original full dimensions. A crafted wide, short metafile can pass the pixel-count decompression-bomb check and make the Windows-only renderer read beyond the heap buffer, potentially disclosing memory or crashing the process. This issue is fixed in version 13.0.0."}],"source":{"advisory":"GHSA-9v9v-9qvf-h2hj","discovery":"UNKNOWN"}},"adp":[{"references":[{"url":"https://github.com/python-pillow/Pillow/security/advisories/GHSA-9v9v-9qvf-h2hj","tags":["exploit"]}],"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-10-28T18:22:22.322892Z","id":"CVE-2026-96644","options":[{"Exploitation":"poc"},{"Automatable":"no"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"title":"CISA ADP Vulnrichment","providerMetadata":{"orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","shortName":"CISA-ADP","dateUpdated":"2026-10-28T18:22:38.027Z"}}]}}