CVE-2026-105396 (GCVE-0-2026-105396)

Vulnerability from cvelistv5 – Published: 2026-10-05 11:09 – Updated: 2026-10-05 14:13
VLAI
Title
Heym before v0.0.112 HITL Review Token Leak via Spoofable Origin Header
Summary
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.
Severity
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
5.4 (Medium)
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-05 14:13 UTC
CWE
  • CWE-346 - Origin Validation Error
Assigner
VulnCheck CNA under the mitre root
CNA scorecard B 84/100 over 5277 records in the last 180 days details
References
Impacted products
Vendor Product Version CPE status
heymrun heym Affected: 0 , < 0.0.112 (semver)
Unaffected: 0.0.112 (semver)
guessed Create a notification for this product.
Date Public
2026-09-20 00:00
Credits
xiaodu55 mbakgun
Show details on NVD website
To clipboard 

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  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



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