CVE-2026-100861

heym before 0.0.105 SSRF via credential-controlled base URLs

MEDIUM
5
CVSS Score
Published: September 27, 2026 at 01:28 AM UTC
Updated: September 28, 2026 at 08:57 PM UTC
1 product affected across 1 vendorHeym

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Severity
MEDIUM5
Exploit prediction
EPSS 0.2%
SSVC
PoC

Description

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

v < 0.0.105
Vendor states this is fixed in 0.0.105 (unaffected)

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

SSVC — Action Prioritization

SSVCPoCNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

5MEDIUMVulnCheck
Attack Vector
NETWORK
Complexity
LOW
Privileges
LOW
User Interaction
NONE
Scope
CHANGED
Confidentiality
LOW
Integrity
NONE
Availability
NONE
Vector?

Quick Info

StatusDEFERRED
CWE
CWE-918

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