{"id":"CVE-2026-59203","state":"PUBLISHED","title":"Pillow EpsImagePlugin negative %%BeginBinary byte count causes infinite loop denial of service","description":"Pillow is a Python imaging library. From 12.0.0 through 12.2.0, Pillow's EPS parser in PIL/EpsImagePlugin.py accepts a negative byte count in the %%BeginBinary directive, allowing a crafted EPS file to cause Image.open() to seek backwards to the same directive and parse it repeatedly in an infinite loop. This issue is fixed in version 12.3.0.","publishedAt":"2026-07-14T15:43:58.333Z","updatedAt":"2026-07-15T13:52:17.491Z","severity":{"score":5.3,"label":"Medium","version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L","source":"GitHub_M"},"assigner":"GitHub_M","products":["python-pillow Pillow"],"affected":[{"vendor":"python-pillow","product":"Pillow","versions":[{"version":">= 12.0.0, < 12.3.0","status":"affected"}]}],"references":["https://github.com/python-pillow/Pillow/security/advisories/GHSA-pg7v-jwj7-p798","https://github.com/python-pillow/Pillow/pull/9708","https://github.com/python-pillow/Pillow/commit/03992618118b4a76b6163cd72ab5ecd684133b83","https://github.com/python-pillow/Pillow/releases/tag/12.3.0"],"weaknesses":["CWE-835"],"ingestedAt":"2026-10-29T20:12:32.778Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/59xxx/CVE-2026-59203.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-59203","state":"PUBLISHED","datePublished":"2026-07-14T15:43:58.333Z","dateUpdated":"2026-07-15T13:52:17.491Z","assignerShortName":"GitHub_M","assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateReserved":"2026-07-02T21:05:02.923Z"},"containers":{"cna":{"title":"Pillow EpsImagePlugin negative %%BeginBinary byte count causes infinite loop denial of service","descriptions":[{"lang":"en","value":"Pillow is a Python imaging library. From 12.0.0 through 12.2.0, Pillow's EPS parser in PIL/EpsImagePlugin.py accepts a negative byte count in the %%BeginBinary directive, allowing a crafted EPS file to cause Image.open() to seek backwards to the same directive and parse it repeatedly in an infinite loop. This issue is fixed in version 12.3.0."}],"affected":[{"vendor":"python-pillow","product":"Pillow","versions":[{"version":">= 12.0.0, < 12.3.0","status":"affected"}]}],"references":[{"url":"https://github.com/python-pillow/Pillow/security/advisories/GHSA-pg7v-jwj7-p798","name":"https://github.com/python-pillow/Pillow/security/advisories/GHSA-pg7v-jwj7-p798","tags":["x_refsource_CONFIRM"]},{"url":"https://github.com/python-pillow/Pillow/pull/9708","name":"https://github.com/python-pillow/Pillow/pull/9708","tags":["x_refsource_MISC"]},{"url":"https://github.com/python-pillow/Pillow/commit/03992618118b4a76b6163cd72ab5ecd684133b83","name":"https://github.com/python-pillow/Pillow/commit/03992618118b4a76b6163cd72ab5ecd684133b83","tags":["x_refsource_MISC"]},{"url":"https://github.com/python-pillow/Pillow/releases/tag/12.3.0","name":"https://github.com/python-pillow/Pillow/releases/tag/12.3.0","tags":["x_refsource_MISC"]}],"metrics":[{"cvssV3_1":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"LOW","baseScore":5.3,"baseSeverity":"MEDIUM","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:L","version":"3.1"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-835","lang":"en","description":"CWE-835: Loop with Unreachable Exit Condition ('Infinite Loop')","type":"CWE"}]}],"providerMetadata":{"shortName":"GitHub_M","orgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateUpdated":"2026-07-14T15:49:07.973Z"},"source":{"advisory":"GHSA-pg7v-jwj7-p798","discovery":"UNKNOWN"}},"adp":[{"title":"CISA ADP Vulnrichment","references":[{"url":"https://github.com/python-pillow/Pillow/security/advisories/GHSA-pg7v-jwj7-p798","tags":["exploit"]}],"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-07-15T13:52:13.769597Z","id":"CVE-2026-59203","options":[{"Exploitation":"poc"},{"Automatable":"yes"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-07-15T13:52:17.491Z"}}]}}}