CRITICALCVSS 9.6

CVE-2026-117997

CVE-2026-117997 updated by NVD

Modified: 2026-11-07
Sources: nvd

Summary

Sandbox escape due to use-after-free in the Widget component. This vulnerability was fixed in Firefox 159, Firefox ESR 153.6, Thunderbird 159, and Thunderbird 153.6.

References

https://nvd.nist.gov/vuln/detail/CVE-2026-117997

Includes data from the National Vulnerability Database (NIST). NVD data is in the public domain; this page is not endorsed by NIST.

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