CVE Explorer
CVE-2026-29079
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.
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
0
Affected products and versions
1 source assertion{"product":"lexbor","vendor":"lexbor","versions":[{"status":"affected","version":"< 2.7.0"}]}
- cve_program_cvelist_v5affectedurn:baitaphish:normalized-source-record:v2:4febe58436177f91f0369571a2f0644b7d28a108ba6a1f299a6829088e5b89aa · sha256:83268a604e11f7b3… · /containers/cna/affected/0
Provider-owned CVSS observations
1 source assertion{"metric":{"attackComplexity":"LOW","attackRequirements":"PRESENT","attackVector":"NETWORK","baseScore":8.2,"baseSeverity":"HIGH","privilegesRequired":"NONE","subAvailabilityImpact":"NONE","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","userInteraction":"NONE","vectorString":"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","version":"4.0","vulnAvailabilityImpact":"HIGH","vulnConfidentialityImpact":"NONE","vulnIntegrityImpact":"NONE"},"metric_type":"cvssV4_0"}
- cve_program_cvelist_v5cvssurn:baitaphish:normalized-source-record:v2:4febe58436177f91f0369571a2f0644b7d28a108ba6a1f299a6829088e5b89aa · sha256:83268a604e11f7b3… · /containers/cna/metrics/0/cvssV4_0
CWE assertions
1 source assertion{"cweId":"CWE-843","description":"CWE-843: Access of Resource Using Incompatible Type ('Type Confusion')","lang":"en","type":"CWE"}
- cve_program_cvelist_v5cweurn:baitaphish:normalized-source-record:v2:4febe58436177f91f0369571a2f0644b7d28a108ba6a1f299a6829088e5b89aa · sha256:83268a604e11f7b3… · /containers/cna/problemTypes/0/descriptions/0
Source references
1 source assertion{"name":"https://github.com/lexbor/lexbor/security/advisories/GHSA-mrpr-v36q-2vp8","tags":["x_refsource_CONFIRM"],"url":"https://github.com/lexbor/lexbor/security/advisories/GHSA-mrpr-v36q-2vp8"}
- cve_program_cvelist_v5referenceurn:baitaphish:normalized-source-record:v2:4febe58436177f91f0369571a2f0644b7d28a108ba6a1f299a6829088e5b89aa · sha256:83268a604e11f7b3… · /containers/cna/references/0
Attribution and limitations
- CVE Program CVEList V5: Reproduce the MITRE copyright designation and CVE license in copies. Source →
Provider severity values are preserved separately. Baitaphish does not convert them into a risk rating, infer affected products, or treat EPSS as observed exploitation.