A security issue has been found in Firefox before version 95 and Thunderbird before version 91.4.0. When invoking protocol handlers for external protocols, a supplied parameter URL containing spaces was not properly escaped.
A security issue has been found in Firefox before version 95 and Thunderbird before version 91.4.0. When invoking protocol handlers for external protocols, a supplied parameter URL containing spaces was not properly escaped.
https://www.mozilla.org/security/advisories/mfsa2021-52/ https://www.mozilla.org/security/advisories/mfsa2021-54/ https://bugzilla.mozilla.org/show_bug.cgi?id=1696685
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