Vulnerability in Mozilla Firefox

CVE-2022-31736

A malicious website could have learned the size of a cross-origin resource that supported Range requests. This vulnerability affects Thunderbird < 91.10, Firefox < 101, and Firefox ESR < 91.10.

EPSS: 0.011 (60.2th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

Affected products

Weakness classification (CWE)

References

Frequently asked questions

What is CVE-2022-31736?
CVE-2022-31736 is a critical-severity vulnerability in Mozilla Firefox, classified under Permissive Cross-domain Policy with Untrusted Domains. CVSS score: 9.8/10. Published 2022-12-22.
How severe is CVE-2022-31736?
Critical severity. CVSS v3 base score is 9.8 out of 10.