{"id":"PYSEC-2026-2455","summary":"Docling's JATS XML backend is vulnerable to XML Entity Expansion (XXE) attacks","details":"Docling's JATS XML backend is vulnerable to XML Entity Expansion (XXE) attacks thru 2.61.0. The backend uses etree.parse() to parse XML files without disabling entity resolution. An attacker can craft a malicious XML file containing a nested entity expansion payload (XML Bomb). When processed by Docling, the exponential expansion of entities leads to excessive resource consumption, resulting in a denial of service (DoS) condition on the system running the Docling parser.","aliases":["CVE-2026-31247","GHSA-cr42-rg2m-mq4q"],"modified":"2026-07-13T16:31:40.089732506Z","published":"2026-07-13T15:15:44.598197Z","references":[{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-31247"},{"type":"PACKAGE","url":"https://github.com/docling-project/docling"},{"type":"WEB","url":"https://www.notion.so/CVE-2026-31247-35d1e1393188818fa654c116c6a470bb"},{"type":"PACKAGE","url":"https://pypi.org/project/docling"},{"type":"ADVISORY","url":"https://github.com/advisories/GHSA-cr42-rg2m-mq4q"}],"affected":[{"package":{"name":"docling","ecosystem":"PyPI","purl":"pkg:pypi/docling"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"last_affected":"2.61.0"}]}],"versions":["0.1.0","0.1.1","0.1.2","0.2.0","0.3.0","0.3.1","0.4.0","1.0.0","1.0.1","1.0.2","1.1.0","1.1.1","1.1.2","1.10.0","1.11.0","1.12.0","1.12.1","1.12.2","1.13.0","1.13.1","1.14.0","1.15.0","1.16.0","1.16.1","1.17.0","1.18.0","1.19.0","1.19.1","1.2.0","1.2.1","1.20.0","1.3.0","1.4.0","1.5.0","1.6.0","1.6.1","1.6.2","1.6.3","1.7.0","1.7.1","1.8.0","1.8.1","1.8.2","1.8.3","1.8.4","1.8.5","1.9.0","2.0.0","2.1.0","2.10.0","2.11.0","2.12.0","2.13.0","2.14.0","2.15.0","2.15.1","2.16.0","2.17.0","2.18.0","2.19.0","2.2.0","2.2.1","2.20.0","2.21.0","2.22.0","2.23.0","2.23.1","2.24.0","2.25.0","2.25.1","2.25.2","2.26.0","2.27.0","2.28.0","2.28.1","2.28.2","2.28.3","2.28.4","2.29.0","2.3.0","2.3.1","2.30.0","2.31.0","2.31.1","2.31.2","2.32.0","2.33.0","2.34.0","2.35.0","2.36.0","2.36.1","2.37.0","2.38.0","2.38.1","2.39.0","2.4.0","2.4.1","2.4.2","2.40.0","2.41.0","2.42.0","2.42.1","2.42.2","2.43.0","2.44.0","2.45.0","2.46.0","2.47.0","2.47.1","2.48.0","2.49.0","2.5.0","2.5.1","2.5.2","2.50.0","2.51.0","2.52.0","2.53.0","2.54.0","2.55.0","2.55.1","2.56.0","2.56.1","2.57.0","2.58.0","2.59.0","2.6.0","2.60.0","2.60.1","2.61.0","2.7.0","2.7.1","2.8.0","2.8.1","2.8.2","2.8.3","2.9.0"],"database_specific":{"source":"https://github.com/pypa/advisory-database/blob/main/vulns/docling/PYSEC-2026-2455.yaml"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"}]}