CVE-2026-5557
MediumCVSS 6.3Exploitation Probability (EPSS)
Low risk29th percentile - higher than 29% of all known CVEs
Summary
In pi-mono up to version 0.58.4, the pi-mom Slack Bot component in packages/mom/src/slack.ts has an authentication bypass vulnerability via an alternate channel. The attack can be executed remotely and the exploit is public.
Risk Assessment
An attacker can bypass authentication and gain unauthorized access to Slack bot functions, potentially compromising communication security.
Recommendation
Update pi-mono to a version above 0.58.4 or apply vendor patches.
Other vulnerabilities in pi-mono
See all- CVE-2026-5556Medium
pi-mono up to 0.58.4 has a code injection vulnerability in the discoverAndLoadExtensions function in loader.ts. Remote exploitation is possible and the exploit is public.
- CVE-2026-5533Medium
In badlogic pi-mono 0.58.4, a cross-site scripting (XSS) vulnerability exists in packages/web-ui/src/tools/artifacts/SvgArtifact.ts in the SVG Artifact Handler component. Remote exploitation is possible and the exploit is public.
Original NVD description (English source)
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 data from NVD (NIST) · CISA KEV · EPSS