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Low ALAS2023-2026-1836 1 CVE

Low: perl-HTML-Parser security update (Amazon Linux 2023)

Published Jun 22, 2026 · Updated Jun 22, 2026

Summary

Package updates are available for Amazon Linux 2023 that fix the following vulnerabilities: CVE-2026-8829: 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.

Fixed packages 4

ReleasePackageFixed in
Amazon Linux · 2023 perl-HTML-Parser 0:3.76-1.amzn2023.0.4
Amazon Linux · 2023 perl-HTML-Parser-debuginfo 0:3.76-1.amzn2023.0.4
Amazon Linux · 2023 perl-HTML-Parser-debugsource 0:3.76-1.amzn2023.0.4
Amazon Linux · 2023 perl-HTML-Parser-tests 0:3.76-1.amzn2023.0.4

Vulnerabilities 1

  • High 7.5

    HTML::Entities versions before 3.84 for Perl read freed heap memory in _decode_entities

    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 w…

References

  • web
    https://alas.aws.amazon.com/cve/html/CVE-2026-8829.html