CVE-2026-100861

MEDIUM 5.0

heym before 0.0.105 SSRF via credential-controlled base URLs

CVSS Score

5.0

EPSS Score

0.0%

EPSS Percentile

0th

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.

CWE	CWE-918
Vendor	heymrun
Product	heym
Published	Sep 27, 2026

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CVSS v3 Breakdown

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

Attack Vector

Network

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Changed

Confidentiality

Low

Integrity

None

Availability

None

Affected Versions

heymrun / heym

0 < 0.0.105

References

NVD ↗ CVE.org ↗ EPSS Data ↗

github.com: https://github.com/heymrun/heym/security/advisories/GHSA-xchj-mw74-2232 vulncheck.com: https://www.vulncheck.com/advisories/heym-before-0.0.105-ssrf-via-credential-controlled-base-urls

Credits

🔍 fatihkaratash mbakgun