CVE-2026-29079
Type Confusion in Lexbor Fragment Parser
CVSS Score
0.0
EPSS Score
0.0%
EPSS Percentile
0th
Lexbor is a web browser engine library. Prior to 2.7.0, a type‑confusion vulnerability exists in Lexbor’s HTML fragment parser. When ns = UNDEF, a comment is created using the “unknown element” constructor. The comment’s data are written into the element’s fields via an unsafe cast, corrupting the qualified_name field. That corrupted value is later used as a pointer and dereferenced near the zero page. This vulnerability is fixed in 2.7.0.
| CWE | CWE-843 |
| Vendor | lexbor |
| Product | lexbor |
| Published | Mar 13, 2026 |
| Last Updated | Mar 16, 2026 |
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Affected Versions
lexbor / lexbor
< 2.7.0