Is CVE-2026-29079 actively exploited?

No active exploitation of CVE-2026-29079 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2026-29079 be exploited remotely?

Yes. CVE-2026-29079 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2026-29079?

CVE-2026-29079 has a CVSS score of 7.5 (HIGH).

HOME VULNERABILITIESCVE-2026-29079

HIGH

CVE-2026-29079

CWE-843Published: March 13, 2026· Updated: Mar 18, 2026

7.5

CVSS v3.1

EPSS:0.04%probability of exploitation in 30 daysPercentile:12.6th

Official 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.

NVD Source

Technical Analysis

CVE-2026-29079 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

A successful exploit results in availability disruption (denial of service), with a CVSS base score of 7.5.