{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-59991","assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","state":"PUBLISHED","assignerShortName":"GitHub_M","dateReserved":"2026-07-07T19:41:00.005Z","datePublished":"2026-09-22T19:11:38.661Z","dateUpdated":"2026-09-22T19:37:39.755Z"},"containers":{"cna":{"title":"psd-tools: Uncontrolled memory allocation in psd-tools composite/numpy via crafted PSD geometry","problemTypes":[{"descriptions":[{"cweId":"CWE-789","lang":"en","description":"CWE-789: Memory Allocation with Excessive Size Value","type":"CWE"}]}],"metrics":[{"cvssV3_1":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"HIGH","baseScore":7.5,"baseSeverity":"HIGH","confidentialityImpact":"NONE","integrityImpact":"NONE","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","version":"3.1"}}],"references":[{"name":"https://github.com/psd-tools/psd-tools/security/advisories/GHSA-8q6g-vjhf-jp8m","tags":["x_refsource_CONFIRM"],"url":"https://github.com/psd-tools/psd-tools/security/advisories/GHSA-8q6g-vjhf-jp8m"},{"name":"https://github.com/psd-tools/psd-tools/commit/a3d9a53ad51e667b5772a4f636ca6f2e16f4b271","tags":["x_refsource_MISC"],"url":"https://github.com/psd-tools/psd-tools/commit/a3d9a53ad51e667b5772a4f636ca6f2e16f4b271"},{"name":"https://github.com/psd-tools/psd-tools/releases/tag/v1.17.4","tags":["x_refsource_MISC"],"url":"https://github.com/psd-tools/psd-tools/releases/tag/v1.17.4"}],"affected":[{"vendor":"psd-tools","product":"psd-tools","versions":[{"version":"< 1.17.4","status":"affected"}]}],"providerMetadata":{"orgId":"a0819718-46f1-4df5-94e2-005712e83aaa","shortName":"GitHub_M","dateUpdated":"2026-09-22T19:11:38.661Z"},"descriptions":[{"lang":"en","value":"psd-tools is a Python package for working with Adobe Photoshop PSD files. Prior to 1.17.4, PSDImage.composite() and PSDImage.numpy() allocated output buffers from attacker-controlled PSD header geometry, including width, height, channels, depth, and per-layer rectangles, before validating those values against the available file data. A tiny crafted PSD could therefore cause multi-gigabyte memory allocation, and PSDImage.composite() could return a black image with only a warning instead of raising an exception. Services that composite untrusted PSD files could be terminated by out-of-memory handling. This issue is fixed in version 1.17.4."}],"source":{"advisory":"GHSA-8q6g-vjhf-jp8m","discovery":"UNKNOWN"}},"adp":[{"references":[{"url":"https://github.com/psd-tools/psd-tools/security/advisories/GHSA-8q6g-vjhf-jp8m","tags":["exploit"]}],"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-09-22T19:36:58.263987Z","id":"CVE-2026-59991","options":[{"Exploitation":"poc"},{"Automatable":"yes"},{"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":"2026-09-22T19:37:39.755Z"}}]}}