{"id":"CVE-2026-31247","aliases":["EUVD-2026-29055","GHSA-cr42-rg2m-mq4q","PYSEC-2026-2455"],"status":"published","title":"Docling's JATS XML backend is vulnerable to XML Entity Expansion (XXE) attacks","description":"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.","severity":{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high","assessor":"adp","from":"cve"},"epss":{"day":"2026-11-11","score":0.00351,"percentile":0.29096,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-400"],"published":"2026-05-11T00:00:00Z","modified":"2026-11-08T16:10:00Z","affected":[{"source":"ghsa","ecosystem":"PyPI","package":"docling","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"last_affected":"2.61.0"}]}]},{"source":"osv","ecosystem":"PyPI","package":"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"]},{"source":"osv","ecosystem":"PyPI","package":"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"]}],"references":[{"url":"https://github.com/docling-project/docling","tags":["package"]},{"url":"https://www.notion.so/CVE-2026-31247-35d1e1393188818fa654c116c6a470bb","tags":["web"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-31247","tags":["advisory"]},{"url":"https://github.com/advisories/GHSA-cr42-rg2m-mq4q","tags":["advisory"]},{"url":"https://pypi.org/project/docling","tags":["package"]}],"sources":{"cve":[{"id":"CVE-2026-31247","description":"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.","status":"published","published":"2026-05-11T00:00:00Z","modified":"2026-05-12T18:42:55.864Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high","assessor":"adp"}],"cwes":["CWE-400"],"updated_at":"2026-11-02T14:19:50.92611Z"}],"euvd":[{"id":"EUVD-2026-29055","description":"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.","status":"published","published":"2026-05-11T00:00:00Z","modified":"2026-05-12T18:42:55Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"updated_at":"2026-11-02T19:04:36.64757Z"}],"ghsa":[{"id":"GHSA-cr42-rg2m-mq4q","title":"Docling's JATS XML backend is vulnerable to XML Entity Expansion (XXE) attacks","description":"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.","status":"published","published":"2026-05-11T18:31:43Z","modified":"2026-05-18T14:20:54Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"cwes":["CWE-400"],"updated_at":"2026-11-02T14:40:11.298154Z"}],"nvd":[{"id":"CVE-2026-31247","description":"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.","status":"published","published":"2026-05-11T16:17:29.743Z","modified":"2026-11-08T16:10:00.183Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high","assessor":"secondary"}],"cwes":["CWE-400"],"updated_at":"2026-11-08T18:10:35.805931Z"}],"osv":[{"id":"GHSA-cr42-rg2m-mq4q","title":"Docling's JATS XML backend is vulnerable to XML Entity Expansion (XXE) attacks","description":"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.","status":"published","published":"2026-05-11T18:31:43Z","modified":"2026-07-13T16:43:07.440539926Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"cwes":["CWE-400"],"updated_at":"2026-11-02T15:46:45.28161Z"},{"id":"PYSEC-2026-2455","title":"Docling's JATS XML backend is vulnerable to XML Entity Expansion (XXE) attacks","description":"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.","status":"published","published":"2026-07-13T15:15:44.598197Z","modified":"2026-07-13T16:31:40.089732506Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"updated_at":"2026-11-02T15:52:55.961245Z"}]}}