CRITICALCVSS 9.8

CVE-2026-16375

CVE-2026-16375 updated by NVD

Modified: 2026-07-26
Sources: nvd

Summary

Site isolation issue in the Networking: HTTP component. This vulnerability was fixed in Firefox 153, Firefox ESR 140.13, Thunderbird 153, and Thunderbird 140.13.

References

https://nvd.nist.gov/vuln/detail/CVE-2026-16375

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

CVE® is a registered trademark of The MITRE Corporation. CVE content reproduced under the CVE Terms of Use; copyright designation © MITRE.