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CVE-2025-26695: When requesting an OpenPGP key from a WKD server, an incorrect padding size was used and a network observer could have learned the length of the...
Description
When requesting an OpenPGP key from a WKD server, an incorrect padding size was used and a network observer could have learned the length of the requested email address. This vulnerability affects Thunderbird < 136 and Thunderbird < 128.8.
Classification
CVE ID: CVE-2025-26695
Problem Types
Downloading of OpenPGP keys from WKD used incorrect paddingAffected Products
Vendor: Mozilla, Mozilla
Product: Thunderbird, Thunderbird
Exploit Prediction Scoring System (EPSS)
EPSS Score: 0.02% (probability of being exploited)
EPSS Percentile: 1.73% (scored less or equal to compared to others)
EPSS Date: 2025-04-08 (when was this score calculated)
References
https://nvd.nist.gov/vuln/detail/CVE-2025-26695https://bugzilla.mozilla.org/show_bug.cgi?id=1883039
https://www.mozilla.org/security/advisories/mfsa2025-17/
https://www.mozilla.org/security/advisories/mfsa2025-18/