CVE-2026-29079

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Source
https://cve.org/CVERecord?id=CVE-2026-29079
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-29079.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-29079
Aliases
  • GHSA-mrpr-v36q-2vp8
Downstream
Published
2026-03-13T17:19:46.025Z
Modified
2026-07-15T01:49:09.442608200Z
Severity
  • 8.2 (High) CVSS_V4 - CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N CVSS Calculator
Summary
Type Confusion in Lexbor Fragment Parser
Details

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.

Database specific 
{
    "cwe_ids": [
        "CWE-843"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/29xxx/CVE-2026-29079.json",
    "cna_assigner": "GitHub_M"
}
References

Affected packages

Git / github.com/lexbor/lexbor

Affected ranges

Type
GIT
Repo
https://github.com/lexbor/lexbor
Events
Introduced
0 Unknown introduced commit / All previous commits are affected
Fixed
de30a79397f8db1c22bce2fd5a792d84fd065762
Database specific 
{
    "cpe": "cpe:2.3:a:lexbor:lexbor:*:*:*:*:*:*:*:*",
    "extracted_events": [
        {
            "introduced": "0"
        },
        {
            "fixed": "2.7.0"
        }
    ],
    "source": [
        "AFFECTED_FIELD",
        "CPE_RANGE"
    ]
}

Affected versions

0.*
0.1.0
0.2.0
v0.*
v0.4.0
v1.*
v1.0.0
v2.*
v2.1.0
v2.2.0
v2.3.0
v2.4.0
v2.5.0
v2.6.0

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-29079.json"