What is CVE-2026-57953?

CVE-2026-57953 is a medium-severity vulnerability in Its-a-feature Mythic, classified under Incorrect Authorization. CVSS score: 5.4/10. Published 2026-06-29.

How severe is CVE-2026-57953?

Medium severity. CVSS v3 base score is 5.4 out of 10.

Auth bypass in Its-a-feature Mythic

CVE-2026-57953

Mythic before 3.4.0.60 contains an authorization bypass vulnerability that allows authenticated spectator-role users to perform unauthorized write operations by accessing the eventing_import_automatic_webhook endpoint registered under spec…

Vulnerability class: Broken Access Control

CVSS v3 metric

CVSS v3 base score 5.4 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:L.

Affected products

Its-a-feature Mythic — versions 0

Weakness classification (CWE)

CWE-863 — Incorrect Authorization

References

disclosure@vulncheck.com (patch)
disclosure@vulncheck.com (issue-tracking)
disclosure@vulncheck.com (release-notes)
disclosure@vulncheck.com (third-party-advisory)

Frequently asked questions

What is CVE-2026-57953?: CVE-2026-57953 is a medium-severity vulnerability in Its-a-feature Mythic, classified under Incorrect Authorization. CVSS score: 5.4/10. Published 2026-06-29.
How severe is CVE-2026-57953?: Medium severity. CVSS v3 base score is 5.4 out of 10.