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TI-2026-71178 Aliases CVE-2026-109362GHSA-7v8m-98rf-rgvw

Broken access control in Heym lets former collaborators run workflows

Priority MEDIUM 57CWE-613Published · Updated

Key facts

Attack vector
Network
Privileges required
Low
User interaction
None
Attack complexity
Low
Attack requirements
None
Impact type
Security bypass
Confidentiality · integrity · availability
Low · Low · None
Fix status
Fixed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-613.

Summary

Heym versions from 0.0.5 before 0.0.113 let former collaborators keep executing JWT-auth workflows after their share is removed. Scoped workflow:execute tokens remain usable after share removal, and an attacker can mint a token with a TTL up to 10 years that the owner cannot list or revoke. The attacker needs low privileges and can repeatedly run the workflow, consuming the shared credentials. This flaw is tracked as CWE-613, insufficient session expiration.

Written with Claude Haiku 5.5 from the sources below · 2026-10-29

Description from the CNA

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.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00213 11th percentileScored 2026-11-07
Fix Fixed heym (heymrun): 0.0.113

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
Poc
Automatable
No
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
heymrunheym0.0.5 to before 0.0.1130.0.113Patch availableCNA
  • heym Vendorheymrun Affected 0.0.5 to before 0.0.113 Fixed in 0.0.113 Patch available CNA

Remediation

Upgrade heymrun Heym to version 0.0.113 or later. CISA has not listed this vulnerability in its Known Exploited Vulnerabilities catalog.

Written with Claude Haiku 5.5 from the sources below · 2026-10-29

  • Fix · CNA heym (heymrun) Fixed in 0.0.113

Timeline

  1. 2026-10-12 Threatist record created from CVE-2026-109362
  2. 2026-10-12 Alias added: GHSA-7v8m-98rf-rgvw
  3. 2026-10-15 CISA SSVC decision points changed
  4. 2026-10-15 Priority changed: LOW → MEDIUM

References

Advisory 1

  • TI-2026-71768 Sandbox escape in heym Python tool allows command execution CVSS 3.1HIGH 8.8
  • TI-2026-65003 Heym before 0.0.53 Remote Code Execution via eval() Sandbox Escape CVSS 4.0HIGH 8.7
  • TI-2026-65002 heym before 0.0.91 Remote Code Execution via Expression Engine CVSS 4.0HIGH 8.7
  • TI-2026-33042 Heym < 0.0.21 Sandbox Escape via Python Introspection CVSS 4.0HIGH 8.7
  • TI-2026-65083 Heym before 0.0.53 Authentication Bypass via Telegram Webhook CVSS 4.0HIGH 8.3
  • TI-2026-65082 Heym before 0.0.53 Slack Webhook Signature Verification Bypass CVSS 4.0HIGH 8.3
See all 17 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences