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lexbor vulnerabilities

2 published CVES affecting lexbor, from public sources (CVE.org, NVD, CISA KEV, FIRST EPSS, OSV).

Total
2
Critical
0
High
2
Medium
0
Low
0
Unscored
0
CISA KEV
0
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Latest lexbor CVEs

Newest publication first

  1. CVE-2026-29079 Type Confusion in Lexbor Fragment Parser

    Published
    HighCVSS 8.2 EPSS 0.31%

    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 ca...

  2. CVE-2026-29078 Integer Underflow in Lexbor ISO‑2022‑JP Encoder

    Published
    HighCVSS 8.2 EPSS 0.31%

    Lexbor is a web browser engine library. Prior to 2.7.0, the ISO‑2022‑JP encoder in Lexbor fails to reset the temporary size variable between iterations. The statement ctx->buffer_used -= size with a stale size = 3 causes an integer underflow that wraps to SIZE_MAX. Afterwards, me...

Sources: CVE.org, NVD, CISA KEV, FIRST EPSS, OSV and public exploit-reference metadata. Product matching comes from the published CVE records. A proof-of-concept means public code exists; it is not evidence of exploitation.