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.
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Arch Linux | — | Upgrade to the latest version of Arch Linux | Jul 11, 2025 | Jun 11, 2018 |
| Freebsd | — | Upgrade libxulUpgrade linux-thunderbirdUpgrade firefoxUpgrade seamonkeyUpgrade firefox-esrUpgrade linux-seamonkeyUpgrade thunderbirdUpgrade linux-firefox | Aug 8, 2017 | Aug 8, 2017 |
| Mfsa2017 18 | — | Upgrade to the latest version of Mozilla FirefoxUpgrade to Mozilla Firefox version 55.0 | Aug 9, 2017 | Aug 8, 2017 |
| Suse | — | Upgrade MozillaFirefox-translations-commonUpgrade MozillaFirefoxUpgrade MozillaFirefox-translations-other | May 20, 2018 | Aug 8, 2017 |
| Ubuntu | — | Upgrade firefox | Aug 16, 2017 | Aug 8, 2017 |
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