CVE-2026-8829 (GCVE-0-2026-8829)

Vulnerability from cvelistv5 – Published: 2026-06-04 02:03 – Updated: 2026-06-28 11:34
VLAI
Title
HTML::Entities versions before 3.84 for Perl read freed heap memory in _decode_entities
Summary
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.
Severity
7.5 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
SSVC
Exploitation: none Automatable: yes Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-06-04 12:59 UTC
CWE
Assigner
CPANSec CNA under the redhat root
CNA scorecard C 63/100 over 317 records in the last 180 days details
References
Impacted products
Vendor Product Version CPE status
OALDERS HTML::Entities Affected: 0 , < 3.84 (custom)
guessed Create a notification for this product.
Show details on NVD website
To clipboard 

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