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.
Metrics
Affected Vendors & Products
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References
History
Fri, 13 Mar 2026 17:30:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Description | 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. | |
| Title | Type Confusion in Lexbor Fragment Parser | |
| Weaknesses | CWE-843 | |
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cvssV4_0
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MITRE
Status: PUBLISHED
Assigner: GitHub_M
Published: 2026-03-13T17:19:46.025Z
Updated: 2026-03-13T17:19:46.025Z
Reserved: 2026-03-03T20:51:43.483Z
Link: CVE-2026-29079
Vulnrichment
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NVD
Status : Received
Published: 2026-03-13T19:54:32.747
Modified: 2026-03-13T19:54:32.747
Link: CVE-2026-29079
Redhat
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