CVE-2026-57951

Mythic < 3.4.0.60 - Broken Permission Filter in payload_build_step Table

CVSS 7.1 HIGHEPSS 0.3%CWE-863

Vexday Risk Score

21Low

SSVC decision (CISA)

Track

No exploitation signal → monitor

CVSS 7.1EPSS 0.3%KEV nãoPoC —Nuclei —Metasploit —Patch referenciado

Lifecycle

29 Jun 2026Published on NVD

Recommendation: Monitor — no exploitation signal at the moment.

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.

CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N

Affected products

its-a-feature · Mythic

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References

https://github.com/its-a-feature/Mythic/commit/82648e8241b800a32e1882afc310e7316d98ebaa https://github.com/its-a-feature/Mythic/issues/563 https://github.com/its-a-feature/Mythic/releases/tag/v3.4.0.60 https://www.vulncheck.com/advisories/mythic-broken-permission-filter-in-payload-build-step-table