CVE-2026-119332 Ladybird - Use After Free

Ladybird web browser contains a use-after-free vulnerability caused by improper iterator handling in FinalizationRegistry::cleanup(), letting attackers trigger memory corruption via crafted JavaScript callbacks, exploit requires attacker-controlled JavaScript execution.

CVSS base score 8.8 /10
High
CISA KEV
Not listed
Public exploit
None known
Authentication
Not required
EPSS
0.24% chance of exploitation in 30 days
View the NVD record ↗

Details

Type
Use After Free
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Published
30 October 2026
Updated
1 November 2026
Weakness
CWE-416

Vendor fix

Update to the version including commit 209579c96473c75bd5eba9701fcadb841a045964 or later.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

References

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