CVE-2026-57951
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.
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (0.43%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
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
- 7.1 HIGHCVSS:4.0/AV:N/AC:L/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/M
- EPSS
- 0.43% probability · 37th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-863
- Affected
- its-a-feature/mythic
- Source
- disclosure@vulncheck.com
References
- https://github.com/its-a-feature/Mythic/commit/82648e8241b800a32e1882afc310e7316d98ebaaPatch
- https://github.com/its-a-feature/Mythic/issues/563Issue Tracking
- https://github.com/its-a-feature/Mythic/releases/tag/v3.4.0.60Release Notes
- https://www.vulncheck.com/advisories/mythic-broken-permission-filter-in-payload-build-step-tableThird Party Advisory
- ttps://github.com/its-a-feature/Mythic/issues/563
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.