{"attribution":"This product uses data from the NVD API but is not endorsed or certified by the NVD.","cve":{"id":"CVE-2026-55379","sourceIdentifier":"security-advisories@github.com","published":"2026-07-06T19:17:08.577","lastModified":"2026-10-25T20:10:00.147","vulnStatus":"Analyzed","cveTags":[],"descriptions":[{"lang":"en","value":"Pillow is a Python imaging library. Prior to 12.3.0, PIL/BdfFontFile.py bdf_char() read the BBX width and height field from a BDF font file and passed attacker-controlled dimensions to Image.new() without calling Image._decompression_bomb_check(), bypassing Pillow's documented decompression bomb protection and allowing excessive memory allocation. This issue is fixed in version 12.3.0."},{"lang":"es","value":"Pillow es una biblioteca de procesamiento de imágenes de Python. Antes de la versión 12.3.0, PIL/BdfFontFile.py bdf_char() leía los campos de ancho y alto BBX de un archivo de fuente BDF y pasaba dimensiones controladas por el atacante a Image.new() sin llamar a Image._decompression_bomb_check(), eludiendo la protección contra bombas de descompresión documentada de Pillow y permitiendo una asignación excesiva de memoria. Este problema está solucionado en la versión 12.3.0."}],"affected":[{"source":"security-advisories@github.com","affectedData":[{"vendor":"python-pillow","product":"Pillow","versions":[{"version":"\u003c 12.3.0","status":"affected"}]}]}],"metrics":{"cvssMetricV31":[{"source":"security-advisories@github.com","type":"Secondary","cvssData":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","baseScore":7.5,"baseSeverity":"HIGH","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"NONE","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"NONE","integrityImpact":"NONE","availabilityImpact":"HIGH"},"exploitabilityScore":3.9,"impactScore":3.6}],"ssvcV203":[{"source":"134c704f-9b21-4f2e-91b3-4a467353bcc0","ssvcData":{"timestamp":"2026-07-06T19:16:56.631649Z","id":"CVE-2026-55379","options":[{"exploitation":"poc"},{"automatable":"yes"},{"technicalImpact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}]},"weaknesses":[{"source":"security-advisories@github.com","type":"Secondary","description":[{"lang":"en","value":"CWE-789"}]}],"configurations":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:a:python:pillow:*:*:*:*:*:*:*:*","versionEndExcluding":"12.3.0","matchCriteriaId":"6372231F-529B-45CD-978E-3F2AEFF5F95C"}]}]}],"references":[{"url":"https://github.com/python-pillow/Pillow/blob/main/docs/releasenotes/12.3.0.rst","source":"security-advisories@github.com","tags":["Release Notes"]},{"url":"https://github.com/python-pillow/Pillow/commit/0a263e6264aa5399988d9acd3bbfbca2ca3ec77d","source":"security-advisories@github.com","tags":["Patch"]},{"url":"https://github.com/python-pillow/Pillow/security/advisories/GHSA-45hq-cxwh-f6vc","source":"security-advisories@github.com","tags":["Exploit","Vendor Advisory"]},{"url":"https://github.com/python-pillow/Pillow/security/advisories/GHSA-45hq-cxwh-f6vc","source":"134c704f-9b21-4f2e-91b3-4a467353bcc0","tags":["Exploit","Vendor Advisory"]}]}}