CVE-2026-57951
Mythic < 3.4.0.60 - Broken Permission Filter in payload_build_step Table
CVSS Score
6.5
EPSS Score
0.0%
EPSS Percentile
0th
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.
| CWE | CWE-863 |
| Vendor | its-a-feature |
| Product | mythic |
| Published | Jun 29, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
None
Availability
None
Affected Versions
its-a-feature / Mythic
0 < 3.4.0.60
References
github.com: https://github.com/its-a-feature/Mythic/releases/tag/v3.4.0.60 github.com: https://github.com/its-a-feature/Mythic/issues/563 github.com: https://github.com/its-a-feature/Mythic/commit/82648e8241b800a32e1882afc310e7316d98ebaa vulncheck.com: https://www.vulncheck.com/advisories/mythic-broken-permission-filter-in-payload-build-step-table
Credits
George Chen