CVE-2026-105396
Heym before v0.0.112 HITL Review Token Leak via Spoofable Origin Header
- State
- Published
- Severity
- 5.3 Medium
- Published
- Oct 5, 2026
- Updated
- Oct 5, 2026
- Reserved
- Oct 5, 2026
Description
Heym before v0.0.112 contains a token leakage vulnerability in build_public_base_url() that allows unauthenticated attackers to redirect HITL review links by spoofing Origin or X-Forwarded-Host headers. Attackers can trigger anonymous workflows with forged headers so reviewer notifications point to attacker domains, capturing capability tokens to submit decisions executed with owner credentials.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 4.0 | 5.3 Medium | CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N | VulnCheck |
| 3.1 | 5.4 Medium | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N | VulnCheck |
Weaknesses
- CWE-346 Origin Validation Error
Affected Products
| Product | Versions |
|---|---|
heymheymrun |
|
References
- GitHub Security Advisory (GHSA-6rv3-wh25-7pg5)vendor-advisory
- VulnCheck Advisory: Heym before v0.0.112 HITL Review Token Leak via Spoofable Origin Headerthird-party-advisory
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