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VulnerabilityPublished

CVE-2026-119331: LadybirdBrowser ladybird · Information Exposure

Affects LadybirdBrowser ladybirdSource CVE Database V5

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Not known to be exploited · CVSS 7.1 High.

Data as of 30 Oct 2026, 20:38 UTC

CVSS 3.1 base score
7.1High
How severe the flaw is on the 0–10 CVSS scale.

Thin evidence

One scorer or none
CVSS scores by source
CNA (GitHub_M)CVSS 3.17.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:L/A:N

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 30 Oct 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponized: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 30 Oct 2026.

What to do

Affected software

ProductAffectedFixed in
LadybirdBrowserladybirdAffected
  • =< c0d68bddf3e3616e5173835f0f4c155ee9700d91
Fixed in–

AI-suggested

This vulnerability is fixed by the commit c0d68bddf3e3616e5173835f0f4c155ee9700d91. Users and administrators should update LadybirdBrowser to a version that includes this fix. No additional mitigation is required once the patch is applied.

Description

CVE-2026-119331 is a vulnerability in the LadybirdBrowser web browser where certain CSS stylesheet operations did not enforce the origin-clean flag, allowing a malicious page to read and modify CSS rules from cross-origin stylesheets. This bypasses the Same-Origin Policy, potentially exposing sensitive stylesheet information and altering page layout or visibility. The issue does not lead to memory corruption, code execution, or persistence after the attacker page closes. The vulnerability has been fixed in a specific commit.

References

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