CVE-2026-57953 Mythic < 3.4.0.60 - Unauthorized Automation Workflow Modification via eventing_import_automatic_webhook Endpoint
Authenticated spectator users can bypass authorization to create and delete automation workflows in Mythic, allowing unauthorized modification of operational configurations.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-57953?
CVE-2026-57953 is a medium-severity missing authorization vulnerability in its-a-feature Mythic, published on 29 Jun 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
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.
Weakness: CWE-863
Which versions are affected by CVE-2026-57953?
It affects 1 product.
Products include Its-a-Feature Mythic.
How do I fix CVE-2026-57953?
No fix has been published for CVE-2026-57953 yet. Limit exposure of the affected software until one is available.
Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.
Is CVE-2026-57953 being exploited?
There is no known exploitation of CVE-2026-57953 in the wild and no public exploit code.
Other vulnerabilities in its-a-feature Mythic
Sources
Also known as GHSA-2mvr-4jqv-324m.