CVE-2026-57953: medium-severity vulnerability in its-a-feature Mythic
Mythic < 3.4.0.60 - Unauthorized Automation Workflow Modification via eventing_import_automatic_webhook Endpoint
Published · Updated
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13Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 5.3epss 0.4%
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 spectator-permitted middleware. Attackers with spectator role can exploit this misconfigured access control to create and delete automation workflows, making unauthorized modifications to operation automation configuration and EventGroups.
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:L/SC:N/SI:N/SA:N
Affected products
its-a-feature · MythicRelated CVEs — its-a-feature Mythic
In the same product, most dangerous first.
CVE-2026-57951HIGHMythic < 3.4.0.60 - Broken Permission Filter in payload_build_step TableEPSS 0.4%CVE-2026-119764HIGHMythic 3.2.16 through 3.4.0.61 Stored XSS via Agent-Downloaded File PreviewEPSS 0.3%CVE-2026-57952MEDIUMMythic < 3.4.0.60 - Unauthorized C2 Profile Configuration Access via Unverified Payload UUIDEPSS 0.3%
References
https://github.com/its-a-feature/Mythic/commit/82648e8241b800a32e1882afc310e7316d98ebaahttps://github.com/its-a-feature/Mythic/issues/565https://github.com/its-a-feature/Mythic/releases/tag/v3.4.0.60https://www.vulncheck.com/advisories/mythic-unauthorized-automation-workflow-modification-via-eventing-import-automatic-webhook-endpoint