CVE-2026-8829

Description

HTML::Entities versions before 3.84 for Perl read freed heap memory in _decode_entities. The XS routine backing HTML::Entities::_decode_entities cached a pointer (repl) into the entity-value SV returned by hv_fetch on the entity2char hash. When the input SV was identical to a value SV in that hash, and that value contained its own key as an entity reference, a later call to grow_gap() reallocated the SV's PV buffer and freed the backing allocation that repl still pointed into. The subsequent copy loop read repl_len bytes from the freed allocation. The read may disclose adjacent heap contents into the destination SV.

Traduire en français

Produits concernés

• OALDERS HTML::Entities
• Oalders html\

Scores CVSS

Faiblesses (CWE)

• CWE-416

Références

• https://github.com/libwww-perl/HTML-Parser/commit/6922552b0778c90a9587a3894e248be4d3a25e1c.patch Patch
• https://github.com/libwww-perl/HTML-Parser/pull/56 Issue TrackingPatch
• http://www.openwall.com/lists/oss-security/2026/06/04/2 Mailing ListThird Party Advisory
• https://lists.debian.org/debian-lts-announce/2026/06/msg00044.html

Ailleurs

• NVD
• CVE.org
• CIRCL Vulnerability-Lookup
• CERT-FR
• GitHub Advisories