EUVD-2026-87826
GHSA-77h5-29x8-rvxj
Severity by source
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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Network-reachable SSRF requiring a low-privileged authenticated account (PR:L); scope changes as the app reaches other internal systems (S:C) disclosing their responses (C:L); no integrity or availability impact.
Primary rating from Vendor (VulnCheck).
CVSS VectorVendor: VulnCheck
Lifecycle Timeline
3DescriptionCVE.org
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.
AnalysisAI
SSRF protections can be bypassed in heym before 0.0.105 by authenticated users who configure integration service credentials with base URLs pointing to internal or cloud-metadata addresses, enabling them to read internal service responses through workflow node output. This moderate-severity issue requires low-privileged authentication and has no public exploit identified at time of analysis.
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Requires an authenticated Heym account with the ability to configure an integration service that uses a credential-supplied base URL - the flaw is that egress/SSRF guards are not applied to that credential-controlled URL field. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | This is a genuine but moderate-severity issue, not an urgent priority. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | Full exploit scenario with step-by-step reproduction available after sign-in. |
| Remediation | Upgrade to heym version 0.0.105 or later, which applies egress guards to credential-supplied base URLs (Vendor-released patch: 0.0.105). … Detailed patch versions, workarounds, and compensating controls in full report. |
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External POC / Exploit Code
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