CVE-2025-26695
First published: Tue Mar 04 2025(Updated: )
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.
Credit: security@mozilla.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Thunderbird | <136<128.8 | |
| Thunderbird | <136 | 136 |
| Thunderbird | <128.8 | 128.8 |
| Thunderbird | <128.8.0 | |
| Thunderbird | >=129.0<136.0 |
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Reference Links
Peer vulnerabilities
(Found alongside the following vulnerabilities)
Frequently Asked Questions
What is the severity of CVE-2025-26695?
CVE-2025-26695 is considered a medium severity vulnerability due to the potential exposure of email address lengths to an attacker.
How do I fix CVE-2025-26695?
To fix CVE-2025-26695, upgrade to Thunderbird version 136 or later, or version 128.8 or later.
What versions of Thunderbird are affected by CVE-2025-26695?
CVE-2025-26695 affects versions of Thunderbird prior to 136 and prior to 128.8.
What is the impact of CVE-2025-26695 on user privacy?
The impact of CVE-2025-26695 is that a network observer could potentially learn the length of the requested email address, compromising user privacy.
When was CVE-2025-26695 reported?
CVE-2025-26695 was reported as part of security advisories for Mozilla Thunderbird in 2025.
- agent/type
- agent/guess-ai
- agent/software-canonical-lookup
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- source/Mozilla
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- agent/softwarecombine
- agent/event
- vendor/mozilla
- canonical/thunderbird
- version/thunderbird/129.0