CVE-2026-105396

MEDIUMCVSS 5.4

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.

Timeline

Published:October 5th, 2026 12:17 PM

Last modified:October 5th, 2026 4:00 PM

CVSS Scoring

CVSS v3: 5.4 (MEDIUM)

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N

Weaknesses (CWE)

CWE-346

References & Reports

Advisories, patches, and third-party reports

https://github.com/heymrun/heym/security/advisories/GHSA-6rv3-wh25-7pg5
https://www.vulncheck.com/advisories/heym-before-0.0.112-hitl-review-token-leak-via-spoofable-origin-header

Source: NIST NVD · Data may lag official sources by up to one minute