CVE-2026-21439

Description

badkeys is a tool and library for checking cryptographic public keys for known vulnerabilities. In versions 0.0.15 and below, an attacker may inject content with ASCII control characters like vertical tabs, ANSI escape sequences, etc., that can create misleading output of the badkeys command-line tool. This impacts scanning DKIM keys (both --dkim and --dkim-dns), SSH keys (--ssh-lines mode), and filenames in various modes. This issue is fixed in version 0.0.16.

References

https://github.com/badkeys/badkeys/security/advisories/GHSA-wjpc-4f29-83h3

https://github.com/badkeys/badkeys/issues/40

https://github.com/badkeys/badkeys/commit/de631f69f040974bb5fb442cdab9a1d904c64087

https://github.com/badkeys/badkeys/commit/635a2f3b1b50a895d8b09ec8629efc06189f349a

Details

Source: Mitre, NVD

Risk Information

CVSS v2

CVSS v3

CVSS v4

EPSS