CVE-2026-34072
cronmaster: Middleware authentication bypass enabling unauthorized page access and server-action execution
CVSS Score
8.3
EPSS Score
0.0%
EPSS Percentile
0th
Cr*nMaster (cronmaster) is a Cronjob management UI with human readable syntax, live logging and log history for cronjobs. Prior to version 2.2.0, an authentication bypass in middleware allows unauthenticated requests with an invalid session cookie to be treated as authenticated when the middleware’s session-validation fetch fails. This can result in unauthorized access to protected pages and unauthorized execution of privileged Next.js Server Actions. This issue has been patched in version 2.2.0.
| CWE | CWE-287 CWE-306 CWE-693 |
| Vendor | fccview |
| Product | cronmaster |
| Published | Apr 1, 2026 |
| Last Updated | Apr 1, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:L Attack Vector
Adjacent
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
Low
Affected Versions
fccview / cronmaster
< 2.2.0