CVE-2025-71436: high-severity vulnerability in librdf Raptor RDF Syntax Library
Raptor RDF Syntax Library 2.0.15 through 2.0.16 Heap Buffer Overflow via Language Tag
Published
E-mail alert when it lands in KEV, gets a public PoC or its score goes up.
21Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 7.1epss 0.5%
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, 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.
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:L/VA:H/SC:N/SI:N/SA:N
Affected products
librdf · Raptor RDF Syntax LibraryRelated CVEs — librdf Raptor RDF Syntax Library
In the same product, most dangerous first.
References
https://github.com/dajobe/raptor/blob/raptor2_2_0_16/src/raptor_term.c#L200-L218https://github.com/dajobe/raptor/blob/raptor2_2_0_16/src/raptor_term.c#L270-L287https://github.com/dajobe/raptor/commit/361a803a72817ae771db2438277229e6541e1575https://github.com/dajobe/raptor/issues/83https://www.vulncheck.com/advisories/raptor-rdf-syntax-library-2.0.15-through-2.0.16-heap-buffer-overflow-via-language-tag