CVE-2026-100861CWE-918ssrf

CVE-2026-100861

Medium · published September 27, 2026

CVSS v3.1
5.0
EPSS
0%
Percentile
7.4
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
5.0 · MEDIUM
Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:N/A:N
CVSS v4.0
5.3 · CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:N/SC:L/SI:L/SA:L
EPSS
0.00182 · 7.4th percentile
Weakness
CWE-918 · Server-Side Request Forgery (SSRF)
Published
2026-09-27T06:17Z
References (3)
https://github.com/heymrun/heym/security/advisories/GHSA-xchj-mw74-2232 · [email protected]https://www.vulncheck.com/advisories/heym-before-0.0.105-ssrf-via-credential-controlled-base-urls · [email protected]https://github.com/heymrun/heym/security/advisories/GHSA-xchj-mw74-2232 · 134c704f-9b21-4f2e-91b3-4a467353bcc0
EPSS history
Timeline
  • 28 SEP 03:25Z
    EPSS moved — → 0%
    epss
  • 27 SEP 01:28Z
    heym before 0.0.105 SSRF via credential-controlled base URLs
    cvelistv5