CVE-2026-8829

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{"affected": [{"affectedData": [{"collectionURL": "https://cpan.org/modules", "defaultStatus": "unaffected", "packageName": "HTML-Parser", "product": "HTML::Entities", "programFiles": ["util.c"], "programRoutines": [{"name": "HTML::Entities::_decode_entities"}], "repo": "https://github.com/libwww-perl/HTML-Parser", "vendor": "OALDERS", "versions": [{"lessThan": "3.84", "status": "affected", "version": "0", "versionType": "custom"}]}], "source": "9b29abf9-4ab0-4765-b253-1875cd9b441e"}], "configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:oalders:html\\:\\:entities:*:*:*:*:*:perl:*:*", "matchCriteriaId": "0DB42006-30BD-4085-8C4B-F9D75404315C", "versionEndExcluding": "3.84", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "HTML::Entities versions before 3.84 for Perl read freed heap memory in _decode_entities.\n\nThe 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.\n\nThe read may disclose adjacent heap contents into the destination SV."}, {"lang": "es", "value": "Las versiones de HTML::Entities anteriores a la 3.84 para Perl le\u00edan memoria de mont\u00f3n liberada en _decode_entities.\n\nLa rutina XS que respalda HTML::Entities::_decode_entities almacenaba en cach\u00e9 un puntero (repl) hacia el SV de valor de entidad devuelto por hv_fetch en el hash entity2char. Cuando el SV de entrada era id\u00e9ntico a un SV de valor en ese hash, y ese valor conten\u00eda su propia clave como referencia de entidad, una llamada posterior a grow_gap() reasignaba el b\u00fafer PV del SV y liberaba la asignaci\u00f3n de respaldo a la que repl a\u00fan apuntaba. El bucle de copia subsiguiente le\u00eda repl_len bytes de la asignaci\u00f3n liberada.\n\nLa lectura puede divulgar contenido adyacente del mont\u00f3n en el SV de destino."}], "id": "CVE-2026-8829", "lastModified": "2026-07-22T20:10:00.127", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 7.5, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N", "version": "3.1"}, "exploitabilityScore": 3.9, "impactScore": 3.6, "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-8829", "options": [{"exploitation": "none"}, {"automatable": "yes"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2026-06-04T12:59:04.771815Z", "version": "2.0.3"}}]}, "published": "2026-06-04T03:16:20.260", "references": [{"source": "9b29abf9-4ab0-4765-b253-1875cd9b441e", "tags": ["Patch"], "url": "https://github.com/libwww-perl/HTML-Parser/commit/6922552b0778c90a9587a3894e248be4d3a25e1c.patch"}, {"source": "9b29abf9-4ab0-4765-b253-1875cd9b441e", "tags": ["Issue Tracking", "Patch"], "url": "https://github.com/libwww-perl/HTML-Parser/pull/56"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Mailing List", "Third Party Advisory"], "url": "http://www.openwall.com/lists/oss-security/2026/06/04/2"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "https://lists.debian.org/debian-lts-announce/2026/06/msg00044.html"}], "sourceIdentifier": "9b29abf9-4ab0-4765-b253-1875cd9b441e", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-416"}], "source": "9b29abf9-4ab0-4765-b253-1875cd9b441e", "type": "Secondary"}]}

{}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "[0,3.84)"}}], "enrichment": {"confidence": 100.0, "confidence_source": "cna", "scores": [{"score": 100.0, "source": "cna"}]}, "original": {"product": "HTML::Entities", "source": "cna", "vendor": "OALDERS"}, "product": "html::entities", "vendor": "oalders"}], "created": "2026-06-04T04:00:05.255907+00:00", "updated": "2026-06-05T10:09:22.779373+00:00", "vendors": ["oalders", "oalders$PRODUCT$html::entities"]}