Is CVE-2026-57951 in the CISA KEV catalog?

No. CVE-2026-57951 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2026-57951?

CVE-2026-57951 has a CVSS v3 base score of 6.5 (MEDIUM).

What is the EPSS score for CVE-2026-57951?

CVE-2026-57951 has an EPSS score of 0.25% (16th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2026-57951?

Upgrade mythic to 3.4.0.60 or later.

CVE & CISA-KEV Catalog

CVE-2026-57951

MEDIUM

6.5

CVSS v3

NVD

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.

CWE-863Incorrect Authorization

How to fix

Remediation Available

mythicNVD

Affected:< 3.4.0.60Fixed in:3.4.0.60CVE-2026-57951derived from NVD

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorNetwork

Attack ComplexityLow

Privileges RequiredLow

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityHigh

IntegrityNone

AvailabilityNone

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

Exploit Intelligence

0.25%probability of exploitation in 30 days

16thpercentile

Low risk: more likely to be exploited than 16% of all known CVEs.

References

Patch1

github.com

Third-Party Advisory1

vulncheck.com

Issue Tracking1

github.com

Release Notes1

github.com

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2026-07-01.