Score 7.5 from GitHub Security Advisory (severity: HIGH) published 2026-05-10. CISA-ADP (Vulnrichment) CVSS v3.1 baseline 7.5; sources differ by 0.0.
A fix is available — apply it.
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.
EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).
May 10, 2026
September 18, 2026
These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.
Red Hat Security Advisory: perl-XML-LibXML security update
Red Hat Security Advisory: perl-XML-LibXML security update
Red Hat Security Advisory: perl-XML-LibXML security update
Red Hat Security Advisory: perl-XML-LibXML security update
Red Hat Security Advisory: perl-XML-LibXML security update
Red Hat Security Advisory: perl-XML-LibXML security update
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
XML::LibXML versions through 2.0210 for Perl read out-of-bounds heap memory when parsing XML node...
| Vendor / Ecosystem | Fixed in / Patch | Released | Source |
|---|---|---|---|
| redhat | perl-XML-LibXML-1:2.0206-5.el9_4.1 | 2026-09-17 | redhat |
| redhat | perl-XML-LibXML-1:2.0210-4.el10_0.1 | 2026-09-17 | redhat |
| redhat | perl-XML-LibXML-1:2.0206-5.el9_2.1 | 2026-09-17 | redhat |
| redhat | perl-XML-LibXML-1:2.0206-5.el9_6.1 | 2026-09-17 | redhat |
| redhat | perl-XML-LibXML-1:2.0132-3.el8_10 | 2026-07-15 | redhat |
| redhat | perl-XML-LibXML-1:2.0206-5.el9_8.1 | 2026-07-15 | redhat |
| redhat | perl-XML-LibXML-1:2.0210-4.el10_2.1 | 2026-07-14 | redhat |
Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.
| Package | Vulnerable range | Fixed in | Dependents |
|---|---|---|---|
| libxml-libxml-perl | 2.0134+dfsg-2 ... 2.0207+dfsg-2 (12 versions) | — | — |
| Package | Vulnerable range | Fixed in | Dependents |
|---|---|---|---|
| libxml-libxml-perl | 2.0207+dfsg+really+2.0134-1 | 2.0207+dfsg+really+2.0134-1+deb12u1 | — |
| Package | Vulnerable range | Fixed in | Dependents |
|---|---|---|---|
| libxml-libxml-perl | 2.0207+dfsg+really+2.0134-5 | 2.0207+dfsg+really+2.0134-5+deb13u1 | — |
| Package | Vulnerable range | Fixed in | Dependents |
|---|---|---|---|
| libxml-libxml-perl | 2.0207+dfsg+really+2.0134-5, 2.0207+dfsg+really+2.0134-6, 2.0207+dfsg+really+2.0134-7 | 2.0207+dfsg+really+2.0134-8 | — |
MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.
Vendors that published advisories for this CVE beyond the curated set above. Broader coverage but minimal per-row detail — click through for the original advisory.
Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.
Showing the most recent 100 of 268 total refreshes for this CVE.
See which npm, PyPI, Go, and Maven packages are affected by CVE-2026-8177
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