CVE-2026-57951

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 v3.1 Score

6.5

MEDIUM

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

EPSS — Exploit Prediction

0.0025

Probability of exploitation

0.16%

Percentile rank

EPSS estimates the probability that this vulnerability will be exploited in the wild within the next 30 days. A higher score means more likely to be exploited.

Weakness Type (CWE)

CWE-863 Incorrect Authorization

Affected Products

Vendor	Product	Versions
its-a-feature	mythic	< 3.4.0.60

References

Advisories & Patches

https://github.com/its-a-feature/Mythic/commit/82648e8241b800a32e1882afc310e7316d98ebaa

Other References

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 ttps://github.com/its-a-feature/Mythic/issues/563

Frequently Asked Questions

What is 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. 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. It has a CVSS v3.1 base score of 6.5 (MEDIUM).

How severe is CVE-2026-57951? +

CVE-2026-57951 has a CVSS v3.1 score of 6.5 out of 10, rated MEDIUM. This is a medium-severity vulnerability that should be remediated as part of regular maintenance. The EPSS score is 0.0025, placing it in the 0th percentile for exploitation probability.

What products are affected by CVE-2026-57951? +

CVE-2026-57951 affects products from its-a-feature, specifically: mythic. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2026-57951? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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