CVE-2022-36318: Mozilla Firefox

Medium severity, CVSS 5.3. EPSS: 0.5% chance of exploitation in the next 30 days.

When visiting directory listings for `chrome://` URLs as source text, some parameters were reflected. This vulnerability affects Firefox ESR < 102.1, Firefox ESR < 91.12, Firefox < 103, Thunderbird < 102.1, and Thunderbird < 91.12.

Affected products

• Mozilla Firefox: before 103.0 (fixed in 103.0)
• Mozilla Firefox ESR: before 102.1 (fixed in 102.1); before 91.12 (fixed in 91.12)
• Mozilla Thunderbird: before 102.1 (fixed in 102.1); before 91.12 (fixed in 91.12)

Published 2022-12-22. Last modified 2026-06-17.