Description
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.
Published: 2026-10-20
Score: 7.1 High
EPSS: n/a
KEV: No
Impact: n/a
Action: n/a
AI Analysis

Analysis and contextual insights are available on OpenCVE Cloud.

Remediation

No vendor fix or workaround currently provided.

Additional remediation guidance may be available on OpenCVE Cloud.

Tracking

Sign in to view the affected projects.

Advisories

No advisories yet.

History

Tue, 20 Oct 2026 17:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'poc', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Tue, 20 Oct 2026 15:45:00 +0000

Type Values Removed Values Added
Description 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.
Title Raptor RDF Syntax Library 2.0.15 through 2.0.16 Heap Buffer Overflow via Language Tag
First Time appeared Librdf
Librdf raptor Rdf Syntax Library
Weaknesses CWE-122
CPEs cpe:2.3:a:librdf:raptor_rdf_syntax_library:*:*:*:*:*:*:*:*
Vendors & Products Librdf
Librdf raptor Rdf Syntax Library
References
Metrics cvssV3_1

{'score': 7.1, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:H'}

cvssV4_0

{'score': 7.1, 'vector': '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'}


Subscriptions

Librdf Raptor Rdf Syntax Library
cve-icon MITRE

Status: PUBLISHED

Assigner: VulnCheck

Published:

Updated: 2026-10-20T16:41:49.461Z

Reserved: 2026-10-20T14:50:46.229Z

Link: CVE-2025-71436

cve-icon Vulnrichment

Updated: 2026-10-20T16:41:22.717Z

cve-icon NVD

Status : Awaiting Analysis

Published: 2026-10-20T16:16:59.067

Modified: 2026-10-20T20:06:37.150

Link: CVE-2025-71436

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-10-20T19:30:06Z

Weaknesses
  • CWE-122

    Heap-based Buffer Overflow