CVE-2026-57951
MediumCVSS 6.5Exploitation Probability (EPSS)
Low risk16th percentile - higher than 16% of all known CVEs
Summary
A vulnerability in Mythic before version 3.4.0.60 is caused by a broken Hasura permission filter on the payload_build_step table with an always-satisfied _or condition, bypassing operation-scoped access controls. Authenticated operators and spectators can query payload_build_step to read step_stdout, step_stderr, step_name, and step_description across all operations on the server.
Risk Assessment
The risk involves unauthorized access to sensitive build step output and metadata, potentially leading to information disclosure about operation processes and configurations.
Recommendation
It is recommended to immediately upgrade Mythic to version 3.4.0.60 or later, which includes a fix for the broken Hasura permission filter.
Other vulnerabilities in Mythic
See all- CVE-2026-57953Medium
A vulnerability in Mythic before version 3.4.0.60 allows authenticated spectator-role users to bypass authorization and perform unauthorized write operations. Attackers can exploit the misconfigured eventing_import_automatic_webhook endpoint, registered under spectator-permitted middleware, to create and delete automation workflows.
- CVE-2026-57952Medium
Mythic before version 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.
Original NVD description (English source)
Mythic before 3.4.0.60 contains a broken hasura permission filter on the payload_build_step table with an always-satisfied _or condition that bypasses operation-scoped access controls. Authenticated operators and spectators can query payload_build_step to read step_stdout, step_stderr, step_name, and step_description across all operations on the server.