CVE-2026-57951
MEDIUMMythic < 3.4.0.60 - Broken Permission Filter in payload_build_step Table
Title source: cnaDescription
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.
References (4)
Core 4
Core References
Release Notes release-notes
Release Notes
https://github.com/its-a-feature/Mythic/releases/tag/v3.4.0.60
Issue Tracking issue-tracking
Researcher Disclosure
https://github.com/its-a-feature/Mythic/issues/563
Patch patch
Patch Commit
https://github.com/its-a-feature/Mythic/commit/82648e8241b800a32e1882afc310e7316d98ebaa
Third Party Advisory third-party-advisory
https://www.vulncheck.com/advisories/mythic-broken-permission-filter-in-payload-build-step-table
Scores
CVSS v3
6.5
EPSS
0.0025
EPSS Percentile
15.9%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
CISA SSVC
Vulnrichment
Exploitation
poc
Automatable
no
Technical Impact
partial
Details
CWE
CWE-863
Status
published
Products (2)
its-a-feature/Mythic
< 3.4.0.60
its-a-feature/mythic
< 3.4.0.60
Published
Jun 29, 2026
Tracked Since
Jun 29, 2026