CVE-2026-8177
7.5
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Summary
XML::LibXML versions through 2.0210 for Perl read out-of-bounds heap memory when parsing XML node names containing truncated UTF-8 byte sequences.
A node name ending in the middle of a multi byte UTF-8 sequence causes the parser to read past the end of the input string into adjacent heap memory.
Any Perl process that passes attacker controlled strings to XML::LibXML's DOM node-name methods can reach this path on the default API. The likely consequence is a crash, causing denial of service.
Affected Software
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| SHLOMIF | XML::LibXML | 0 <= 2.0210 | affected |
Weaknesses
- CWE-125: CWE-125 Out-of-bounds Read
ADP Enrichment
CVE Program Container
Additional References
- http://www.openwall.com/lists/oss-security/2026/05/10/8
- http://www.openwall.com/lists/oss-security/2026/05/11/2
CISA ADP Vulnrichment
- SSVC:
- Exploitation: none
- Automatable: yes
- Technical Impact: partial
perl-XML-LibXML: XML::LibXML: Denial of Service via truncated UTF-8 in XML node names
Additional References
- https://access.redhat.com/security/cve/CVE-2026-8177
- https://bugzilla.redhat.com/show_bug.cgi?id=2468684
- https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-8177.json
References
- https://github.com/cpan-authors/XML-LibXML/issues/146
- https://github.com/cpan-authors/XML-LibXML/pull/149
- https://github.com/cpan-authors/XML-LibXML/commit/15652bd905a6c9dda59a81b14d4766adbbae2ea8.patch
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