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TI-2026-64999 Aliases CVE-2026-100861GHSA-77h5-29x8-rvxj

heym before 0.0.105 SSRF via credential-controlled base URLs

Priority MEDIUM 57CWE-918Published · Updated

Key facts

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

Attack profile from CVSS 4.0 · CNA. Fix status from CNA.

Summary

heym before 0.0.105 fails to apply egress guards to integration services that use credential-supplied base URLs, allowing authenticated users to bypass SSRF protections. Attackers can configure credentials pointing to loopback, private, or cloud-metadata addresses and read internal service responses returned as workflow node output.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00228 13th percentileScored 2026-11-07
Fix Fixed heym (heymrun): 0.0.105

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
heymrunheymbefore 0.0.1050.0.105Patch availableCNA
  • heym Vendorheymrun Affected before 0.0.105 Fixed in 0.0.105 Patch available CNA

Remediation

  • Fix · CNA heym (heymrun) Fixed in 0.0.105

Fixed in the same release

Records fixed by the same vendor advisory or release, as the CNA lists them.

  • Release ·

    heymrun heym 0.0.105

    2 records Highest priority Priority MEDIUM 2 MEDIUM

    Other records, highest priority first

    • TI-2026-64998 heym before 0.0.105 Authentication Bypass via Redis NodePriority MEDIUM 63
    Show all 2 records →

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-100861
  2. 2026-10-03 Alias added: GHSA-77h5-29x8-rvxj

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