{"id":"CVE-2025-71436","title":"Raptor RDF Syntax Library 2.0.15 through 2.0.16 Heap Buffer Overflow via Language Tag","summary":"Raptor RDF Syntax Library from 2.0.15 through 2.0.16 contains a heap-based buffer overflow vulnerability in raptor_new_term_from_counted_literal() caused by truncating language tag length to an unsigned char. Attackers can supply Turtle,…","severity":"high","cvss":7.1,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:H","cvssSource":"cna","cwe":["CWE-122"],"vendor":"librdf","product":"Raptor RDF Syntax Library","affected":["raptor_rdf_syntax_library >= 2.0.15 <= 2.0.16"],"ssvc":{"exploitation":"poc","automatable":"no","technicalImpact":"partial","timestamp":"2026-10-20T16:41:11.096426Z"},"exploitAvailable":true,"published":"2026-10-20","updated":"2026-10-20","sourceUpdated":"2026-10-20T16:41:49.461Z","source":"CVEORG","sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2025-71436","references":[{"url":"https://github.com/dajobe/raptor/issues/83"},{"url":"https://github.com/dajobe/raptor/commit/361a803a72817ae771db2438277229e6541e1575"},{"url":"https://github.com/dajobe/raptor/blob/raptor2_2_0_16/src/raptor_term.c#L200-L218"},{"url":"https://github.com/dajobe/raptor/blob/raptor2_2_0_16/src/raptor_term.c#L270-L287"},{"url":"https://www.vulncheck.com/advisories/raptor-rdf-syntax-library-2.0.15-through-2.0.16-heap-buffer-overflow-via-language-tag","label":"VulnCheck Advisory: Raptor RDF Syntax Library 2.0.15 through 2.0.16 Heap Buffer Overflow via Language Tag"}],"tags":["cve.org","exploit-available"],"ingestedAt":"2026-10-20T16:10:53.306Z","slug":"CVE-2025-71436","body":"## Overview\n\nRaptor RDF Syntax Library from 2.0.15 through 2.0.16 contains a heap-based buffer overflow vulnerability in raptor_new_term_from_counted_literal() caused by truncating language tag length to an unsigned char. Attackers can supply Turtle, TriG, N-Triples or N-Quads documents with language tags of 256 bytes or longer to corrupt heap memory, crash applications, and possibly execute code.\n\n## Affected\n\n- `raptor_rdf_syntax_library >= 2.0.15 <= 2.0.16`\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"midnight","depthScore":51,"depthScoreParts":{"impact":39.1,"likelihood":0,"exploitation":12,"ransomware":0},"changes":[{"seq":226002,"id":"CVE-2025-71436","ts":1792516420737,"field":"exploit_available","old":"false","new":"true"}]}