CVE-2026-126133
NO FIX YET
Not triaged yet. The sources’ own description is below.
first public Nov 10, 2026 · 1 source
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When a CalDAV or ICS calendar was accessed through an HTTP proxy that requested authentication, Thunderbird could answer the proxy with the calendar server's username and password. This affected both setting up a new calendar and syncing existing calendars, where a saved password could be sent without any user interaction. A malicious or compromised proxy could use this to obtain the calendar credentials, even for calendars served over HTTPS. This vulnerability was fixed in Thunderbird 160.
NVD data is provided by NIST and is public domain. Posts quoted belong to their authors.
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