XML::Bare versions through 0.53 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.

The remote SUSE Linux SLED15 / SLED_SAP15 / SLES15 / SLES_SAP15 host has a package installed that is affected by multiple vulnerabilities as referenced in the SUSE-SU-2026:3403-1 advisory.

    This update for perl-XML-Bare fixes the following issues

    - CVE-2026-13401: infinite loop when parsing malformed attributes in `parserc_parse` function     (bsc#1271640).
    - CVE-2026-57074: out-of-bounds read due to unbounded character lookahead in the `parserc_parse` function       (bsc#1271637).

Tenable has extracted the preceding description block directly from the SUSE security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote openSUSE 16 host has a package installed that is affected by multiple vulnerabilities as referenced in the openSUSE-SU-2026:21435-1 advisory.

    Changes in perl-XML-Bare:

    - CVE-2026-13401: XML:Bare would hang when parsing malformed attributes (bsc#1271640)
    - CVE-2026-57074: Fixed unbounded character lookahead (bsc#1271637)

Tenable has extracted the preceding description block directly from the SUSE security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available.

  - XML::Bare versions through 0.53 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. (CVE-2026-13401)

Note that Nessus relies on the presence of the package as reported by the vendor.

ID	Name	Product	Family	Severity
331430	SUSE SLED15 / SLES15 Security Update : perl-XML-Bare (SUSE-SU-2026:3403-1)	Nessus	SuSE Local Security Checks	critical
329517	openSUSE 16 Security Update : perl-XML-Bare (openSUSE-SU-2026:21435-1)	Nessus	SuSE Local Security Checks	critical
327474	Linux Distros Unpatched Vulnerability : CVE-2026-13401	Nessus	Misc.	high

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CVE-2026-13401

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