CVE-2026-8829HTML::Entities versions before 3.84 for Perl read freed heap memory in _decode_entities.
Updated under an hour ago ()
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It affects oalders html::entities. Add what you run to find out whether that includes you.
No exploitation reported and no EPSS estimate yet.
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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.
- CVSS
- 7.5 HIGH (v3.1, NVD)CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
- Weakness (CWE)
- CWE-416
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- Not given
- NVD analysis
- Modified
- Record last updated
- Jul 22, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
oalders html::entities oalders:html::entities | before 3.84 | NVD |
References
- https://github.com/libwww-perl/HTML-Parser/commit/6922552b0778c90a9587a3894e248be4d3a25e1c.patchpatch
- https://github.com/libwww-perl/HTML-Parser/pull/56issue-tracking, patch
- http://www.openwall.com/lists/oss-security/2026/06/04/2mailing-list, third-party-advisory
- https://lists.debian.org/debian-lts-announce/2026/06/msg00044.html
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.