Vulnerability · Published Oct 12, 2026 · Assigned by VulnCheck
CVE-2026-109362Heym v0.0.5 before v0.0.113 Broken Access Control via Workflow Execution Tokens
Medium 5.4
In plain English
A medium-severity security flaw in heym from heymrun. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 12% of all known vulnerabilities).
Severity (CVSS 3.1)5.4Medium
Exploit odds (30 days)0.2%top 88.4% of all CVEs
Exploited in the wildNo reportsCISA SSVC: poc
Attack toolingNoneno public tooling known
Official description
Heym v0.0.5 before v0.0.113 contains a broken access control vulnerability that allows former collaborators to keep executing JWT-auth workflows by reusing scoped workflow:execute tokens after share removal. Attackers can mint a token with a TTL up to 10 years, which the owner cannot list or revoke, and repeatedly run the workflow consuming shared credentials.
Affected products (as reported)
Weakness: CWE-613 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N
References
- GitHub Security Advisory (GHSA-pwr6-6377-3cgv) vendor-advisory
- VulnCheck Advisory: Heym v0.0.5 before v0.0.113 Broken Access Control via Workflow Execution Tokens third-party-advisory