CVE-2026-21439

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.

CVSS

No CVSS.

References

Link	Resource
https://github.com/badkeys/badkeys/commit/635a2f3b1b50a895d8b09ec8629efc06189f349a
https://github.com/badkeys/badkeys/commit/de631f69f040974bb5fb442cdab9a1d904c64087
https://github.com/badkeys/badkeys/issues/40
https://github.com/badkeys/badkeys/security/advisories/GHSA-wjpc-4f29-83h3
https://github.com/badkeys/badkeys/issues/40

Configurations

No configuration.

History

06 Jan 2026, 19:16

Type	Values Removed	Values Added
References	~~() https://github.com/badkeys/badkeys/issues/40 -~~	() https://github.com/badkeys/badkeys/issues/40 -

06 Jan 2026, 00:15

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-01-06 00:15

Updated : 2026-01-08 18:09

NVD link : CVE-2026-21439

Mitre link : CVE-2026-21439

CVE.ORG link : CVE-2026-21439

JSON object : View

Products Affected

No product.

CWE

CWE-150

Improper Neutralization of Escape, Meta, or Control Sequences

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