{"id":"CVE-2026-44520","aliases":["GHSA-fqph-j6v6-jvgx","PYSEC-2026-2458"],"url":"https://o3.security/vulnerability/CVE-2026-44520","summary":"Docling-Graph: SSRF via Missing Internal IP Validation in URLInputHandler","details":"Docling-Graph turns documents into validated Pydantic objects, then builds a directed knowledge graph with explicit semantic relationships. Prior to 1.5.1, the URLInputHandler class in docling_graph/core/input/handlers.py makes HTTP requests to user-supplied URLs without validating whether the target resolves to a private, loopback, or link-local IP address. The URLValidator only checks for a valid scheme and non-empty netloc, performing no IP-level validation. Additionally, requests.head() was called with allow_redirects=True, allowing an attacker to redirect requests to internal endpoints via an intermediary URL. An attacker who can control the --source CLI argument or PipelineConfig.source API parameter can trigger Server-Side Request Forgery (SSRF). This vulnerability is fixed in 1.5.1.","published":"2026-05-14T16:56:58.110Z","modified":"2026-08-12T03:51:19.084286466Z","cvss":{"score":5.7,"severity":"MEDIUM","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:N/A:N"},"epss":{"score":0.00188,"percentile":0.08633,"asOf":"2026-08-14"},"cisaKev":null,"exploitsKnown":0,"affectedPackages":[{"ecosystem":"PyPI","name":"docling-graph","fixedVersion":"1.5.1"}],"fix":null,"references":[{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/44xxx/CVE-2026-44520.json"},{"type":"ADVISORY","url":"https://github.com/docling-project/docling-graph/security/advisories/GHSA-fqph-j6v6-jvgx"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-44520"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-08-12T03:51:19.084286466Z"}}