CVE-2025-26695

thunderbird: Downloading of OpenPGP keys from WKD used incorrect padding

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Severity

Low

Red Hat Product Security

4.3

CVSS 3.1

Review impact separately from score.

Published · March 11, 2025

Updated · July 28, 2026

Description

A flaw was found in Thunderbird. The Mozilla Foundation's Security Advisory describes the following issue: 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.

Statement

Red Hat Product Security rates the severity of this flaw as determined by the Mozilla Foundation Security Advisory.

CVSS score applicability

The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.

Mitigation

No mitigation is specified in collected source.

CVSS / CWE

CVSS 3.1 · 4.3
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N

CWE-203 · Observable Discrepancy