CVE-2026-13397

HTML::Bare versions through 0.04 for Perl will hang in an infinite loop when parsing malformed attributes. The parserc_parse function never advances the attribute-parse state cursor on certain malformed attribute forms, looping forever. Nameless attributes such as "<a ='c'>" or unbalanced quotes "<a b='''''''c'>" can trigger this condition. Note that the latest version available on CPAN is version 0.02. Newer versions are available on the git repository.

CVSS v3 7.5 HIGH

7.5^/10

CVSS v3 : HIGH

Vector :

Exploitability : 3.9 / Impact : 3.6

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://github.com/nanoscopic/perl-HTML-Bare/pull/1
https://security.metacpan.org/patches/H/HTML-Bare/0.02/CVE-2026-13397-r1.patch
http://www.openwall.com/lists/oss-security/2026/07/16/4

Configurations

No configuration.

History

24 Oct 2026, 20:10

Type	Values Removed	Values Added
Summary		(es) Las versiones de HTML::Bare hasta la 0.04 para Perl se colgarán en un bucle infinito al analizar atributos mal formados. La función parserc_parse nunca avanza el cursor de estado de análisis de atributos en ciertas formas de atributos mal formados, repitiéndose indefinidamente. Atributos sin nombre como ’<a =’c’>’ o comillas desequilibradas ’<a b=’’’’’’’c’>’ pueden desencadenar esta condición. Tenga en cuenta que la última versión disponible en CPAN es la versión 0.02. Las versiones más recientes están disponibles en el repositorio git.

Information

Published : 2026-07-16 17:16

Updated : 2026-10-24 20:10

NVD link : CVE-2026-13397

Mitre link : CVE-2026-13397

CVE.ORG link : CVE-2026-13397

JSON object : View

Products Affected

No product.

CWE

CWE-835

Loop with Unreachable Exit Condition ('Infinite Loop')

{"id": "CVE-2026-13397", "cveTags": [], "metrics": {"ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-13397", "role": "CISA Coordinator", "options": [{"exploitation": "none"}, {"automatable": "yes"}, {"technicalImpact": "partial"}], "version": "2.0.3", "timestamp": "2026-07-17T13:29:35.290635Z"}}], "cvssMetricV31": [{"type": "Secondary", "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 7.5, "attackVector": "NETWORK", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "NONE", "confidentialityImpact": "NONE"}, "impactScore": 3.6, "exploitabilityScore": 3.9}]}, "affected": [{"source": "9b29abf9-4ab0-4765-b253-1875cd9b441e", "affectedData": [{"repo": "https://github.com/nanoscopic/perl-HTML-Bare", "vendor": "CODECHILD", "product": "HTML::Bare", "versions": [{"status": "affected", "version": "0", "versionType": "custom", "lessThanOrEqual": "0.04"}], "packageName": "HTML-Bare", "programFiles": ["parser.c"], "collectionURL": "https://cpan.org/modules", "defaultStatus": "unaffected", "programRoutines": [{"name": "parserc_parse"}]}]}], "published": "2026-07-16T17:16:55.213", "references": [{"url": "https://github.com/nanoscopic/perl-HTML-Bare/pull/1", "source": "9b29abf9-4ab0-4765-b253-1875cd9b441e"}, {"url": "https://security.metacpan.org/patches/H/HTML-Bare/0.02/CVE-2026-13397-r1.patch", "source": "9b29abf9-4ab0-4765-b253-1875cd9b441e"}, {"url": "http://www.openwall.com/lists/oss-security/2026/07/16/4", "source": "af854a3a-2127-422b-91ae-364da2661108"}], "vulnStatus": "Deferred", "weaknesses": [{"type": "Secondary", "source": "9b29abf9-4ab0-4765-b253-1875cd9b441e", "description": [{"lang": "en", "value": "CWE-835"}]}], "descriptions": [{"lang": "en", "value": "HTML::Bare versions through 0.04 for Perl will hang in an infinite loop when parsing malformed attributes.\n\nThe parserc_parse function never advances the attribute-parse state cursor on certain malformed attribute forms, looping forever.\n\nNameless attributes such as \"<a ='c'>\" or unbalanced quotes \"<a b='''''''c'>\" can trigger this condition.\n\nNote that the latest version available on CPAN is version 0.02. Newer versions are available on the git repository."}, {"lang": "es", "value": "Las versiones de HTML::Bare hasta la 0.04 para Perl se colgar\u00e1n en un bucle infinito al analizar atributos mal formados.\n\nLa funci\u00f3n parserc_parse nunca avanza el cursor de estado de an\u00e1lisis de atributos en ciertas formas de atributos mal formados, repiti\u00e9ndose indefinidamente.\n\nAtributos sin nombre como \u2019<a =\u2019c\u2019>\u2019 o comillas desequilibradas \u2019<a b=\u2019\u2019\u2019\u2019\u2019\u2019\u2019c\u2019>\u2019 pueden desencadenar esta condici\u00f3n.\n\nTenga en cuenta que la \u00faltima versi\u00f3n disponible en CPAN es la versi\u00f3n 0.02. Las versiones m\u00e1s recientes est\u00e1n disponibles en el repositorio git."}], "lastModified": "2026-10-24T20:10:00.137", "sourceIdentifier": "9b29abf9-4ab0-4765-b253-1875cd9b441e"}