CVE-2026-57952: Mythic < 3.4.0.60 - Unauthorized C2 Profile Configuration Access via Unverified Payload UUID

Severity: medium (CVSS 6.5 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.3% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2026-06-29 · updated 2026-10-25
Weakness: CWE-862

Description

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.

Affected products

its-a-feature Mythic: before 3.4.0.60 — fixed in 3.4.0.60

How to fix

Upgrade to a fixed version: its-a-feature Mythic 3.4.0.60. Check the vendor advisory for mitigations.

References

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