EUVD-2026-40169
GHSA-vq63-9qrm-qv35
Severity by source
CVSS:4.0/AV:N/AC:H/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/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-accessible REST API (AV:N), but requires a foreign payload UUID (AC:H); operator auth needed (PR:L); crosses operation security boundary exposing another operation's secrets (S:C/C:H).
Primary rating from Vendor (vulncheck).
CVSS VectorVendor: vulncheck
CVSS:4.0/AV:N/AC:H/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/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
Lifecycle Timeline
2DescriptionCVE.org
Mythic before 3.4.0.60 contains an authorization bypass vulnerability in four REST endpoints (c2profile_config_check_webhook, c2profile_redirect_rules_webhook, c2profile_get_ioc_webhook, c2profile_sample_message_webhook) that fail to verify payload ownership. An operator in one operation can invoke these endpoints with a known payload UUID from another operation to access that operation's C2 profile configuration including encryption keys and callback parameters.
AnalysisAI
Cross-operation authorization bypass in Mythic C2 framework before 3.4.0.60 exposes encryption keys and C2 profile configurations to authenticated operators from separate operations. Four webhook REST endpoints - c2profile_config_check_webhook, c2profile_redirect_rules_webhook, c2profile_get_ioc_webhook, and c2profile_sample_message_webhook - fail to verify that a submitted payload UUID belongs to the caller's operation, allowing an operator in Operation A to retrieve the full C2 profile configuration of Operation B by supplying a known UUID. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Exploitation requires: (1) a valid authenticated operator-level account on the target Mythic instance - PR:L in CVSS 4.0 confirms authentication is required; (2) knowledge of a payload UUID belonging to a different operation on the same server - this is the primary complexity barrier (AC:H) and limits exploitation to scenarios where multiple operations share one Mythic deployment and the attacker can enumerate or obtain a foreign UUID. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | Real-world risk is moderate but operationally significant given Mythic's red-team context. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | A red-team operator authenticated to a shared Mythic server for Operation A discovers or guesses a payload UUID belonging to Operation B (e.g., via log exposure, a misconfigured dashboard, or social engineering a colleague). The operator sends a crafted POST request to the c2profile_config_check_webhook endpoint with Operation B's UUID. … |
| Remediation | Upgrade Mythic to version 3.4.0.60 or later, which adds payload ownership verification to the four affected webhook endpoints. … Detailed patch versions, workarounds, and compensating controls in full report. |
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Cross-operation information disclosure in Mythic C2 framework versions before 3.4.0.60 allows any authenticated operator
Authorization bypass in Mythic C2 framework before 3.4.0.60 allows authenticated spectator-role users to perform write o
Same weakness CWE-862 – Missing Authorization
View allSame technique Authentication Bypass
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External POC / Exploit Code
Leaving vuln.today