CVE-2026-118021

Sandbox escape due to use-after-free in the XPCOM component. This vulnerability was fixed in Firefox 159.

Published

2026-10-27

Modified

2026-10-27

Record from

the NVD, synced 2026-10-27

References

• https://bugzilla.mozilla.org/show_bug.cgi?id=2076695
• https://www.mozilla.org/security/advisories/mfsa2026-118/

Check your stackJSON