CVE-2017-7808: Mozilla Firefox

Medium severity, CVSS 5.3. EPSS: 0.8% chance of exploitation in the next 30 days.

A content security policy (CSP) "frame-ancestors" directive containing origins with paths allows for comparisons against those paths instead of the origin. This results in a cross-origin information leak of this path information. This vulnerability affects Firefox < 55.

Affected products

• Mozilla Firefox: before 55.0 (fixed in 55.0)

Published 2018-06-11. Last modified 2026-06-17.