EUVD-2026-77187
GHSA-54w5-mmvv-3mhc
Severity by source
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P/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 with zero privileges required; limited but real C/I/A impact confined to the vulnerable server, no scope change.
Primary rating from Vendor (vuldb).
CVSS VectorVendor: vuldb
Lifecycle Timeline
1DescriptionCVE.org
A vulnerability was determined in 0x4m4 HexStrike AI up to d689933ff579d839c676c82b231f8e98326c5f04. The impacted element is an unknown function of the file hexstrike_server.py of the component API Command Endpoint. This manipulation causes missing authentication. The attack can be initiated remotely. The exploit has been publicly disclosed and may be utilized. Continious delivery with rolling releases is used by this product. Therefore, no version details of affected nor updated releases are available. The project was informed of the problem early through an issue report but has not responded yet.
AnalysisAI
Missing authentication on the API Command Endpoint in 0x4m4's HexStrike AI (hexstrike_server.py) allows any remote, unauthenticated caller to invoke server-side API commands without presenting credentials. All commits through d689933ff579 in the hexstrike-ai repository are affected; the project uses rolling releases with no discrete versioning, and the maintainer has not responded to the responsible disclosure filed in GitHub issue #223. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | HexStrike AI must be deployed with hexstrike_server.py running and the API Command Endpoint listening on a network-accessible interface reachable by the attacker. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS 4.0 base score of 5.5 (Medium) reflects genuinely constrained impact - VC:L/VI:L/VA:L indicates an attacker can read limited data, make limited modifications, and cause limited disruption, but cannot achieve full system compromise or lateral movement per the SC:N/SI:N/SA:N metrics. … 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 | No vendor-released patch has been identified at time of analysis; the project maintainer has not responded to the responsible disclosure. … Detailed patch versions, workarounds, and compensating controls in full report. |
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Same weakness CWE-287 – Improper Authentication
View allSame technique Authentication Bypass
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External POC / Exploit Code
Leaving vuln.today