Auth bypass in Badlogic Pi-Mono
CVE-2026-5557
A vulnerability was detected in badlogic pi-mono up to 0.58.4. This issue affects some unknown processing of the file packages/mom/src/slack.ts of the component pi-mom Slack Bot. The manipulation results in authentication bypass using alternate channel. The attack can be executed remotely. The exploit is now public and may be used. The vendor was contacted early about this disclosure but did not respond in any way.
Vulnerability class: Broken Authentication
EPSS: 0.004 (28.6th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 6.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L.
Affected products
- Badlogic Pi-mono — versions 0.58.0, 0.58.1, 0.58.2
Weakness classification (CWE)
References
- cna@vuldb.com (vdb-entry)
- cna@vuldb.com (signature, permissions-required)
- cna@vuldb.com (third-party-advisory)
- cna@vuldb.com (issue-tracking, exploit)
Frequently asked questions
- What is CVE-2026-5557?
- CVE-2026-5557 is a medium-severity vulnerability in Badlogic Pi-Mono, classified under Improper Authentication. CVSS score: 6.3/10. Published 2026-04-05.
- How severe is CVE-2026-5557?
- Medium severity. CVSS v3 base score is 6.3 out of 10.