Type Confusion in Lexbor Fragment Parser
Summary
Type Confusion in Lexbor Fragment Parser
Original description
The description as published by the source.
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.
Source: OSV.dev (Open Source Vulnerabilities) NVD GitHub Advisory OSV
Fix status by distribution
Fixed packages published by each distribution for this CVE
- Debian DEBIAN-CVE-2026-29079 lexbor Fixed in: 3.0.0-1
- Ubuntu UBUNTU-CVE-2026-29079 lexbor
References
- advisory github.com
- advisory github.com
- advisory nvd.nist.gov