CVE-2025-26695 - CVE House
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Status published Unknown CVE-2025-26695

Downloading of OpenPGP keys from WKD used incorrect padding

Vulnerability 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 was fixed in Thunderbird 136 and Thunderbird 128.8.

Impact Analysis

Refer to official advisory for detailed impact metrics.

Remediation

Ensure systems are updated to the latest vendor-supplied patch levels.

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Credits & Attribution

The following person or organization is credited with identifying this vulnerability, as recorded in the NVD database:

  • Daniel Huigens

References

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Affected Vendor

Affected Software

Thunderbird
Vulnerable Versions:
128.8, 136

Timeline

Official Publish: March 10th, 2025
Last Modified: April 13th, 2026
Added to House: July 22nd, 2026

CVSS Vectors

No vector data available

Weaknesses (CWE)

No CWE data available

MITRE ATT&CK TTPs

No associated TTPs found for this vulnerability.