Vulnerability DatabaseCVE-2025-71436
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CVE-2025-71436
Published:October 20, 2026
Updated:November 04, 2026
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.
Related Resources (8)
https://github.com/dajobe/raptor/blob/raptor2_2_0_16/src/raptor_term.c#L270-L287
https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/71xxx/CVE-2025-71436.json
https://github.com/dajobe/raptor/blob/raptor2_2_0_16/src/raptor_term.c#L200-L218
https://www.vulncheck.com/advisories/raptor-rdf-syntax-library-2.0.15-through-2.0.16-heap-buffer-overflow-via-language-tag
https://github.com/dajobe/raptor/commit/361a803a72817ae771db2438277229e6541e1575
https://github.com/dajobe/raptor
https://github.com/dajobe/raptor/issues/83
https://nvd.nist.gov/vuln/detail/CVE-2025-71436
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CVSS v4
Base Score:
7.1
Attack Vector
NETWORK
Attack Complexity
LOW
Attack Requirements
NONE
Privileges Required
NONE
User Interaction
PASSIVE
Vulnerable System Confidentiality
NONE
Vulnerable System Integrity
LOW
Vulnerable System Availability
HIGH
Subsequent System Confidentiality
NONE
Subsequent System Integrity
NONE
Subsequent System Availability
NONE
CVSS v3
Base Score:
7.1
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality
NONE
Integrity
LOW
Availability
HIGH
Weakness Type (CWE)
Heap-based Buffer Overflow
CWE-122
EPSS
Base Score:
0.50