CVE-2026-34072CWE-287CWE-306CWE-693

cronmaster: Middleware authentication bypass enabling unauthorized page access and server-action execution

High · published April 1, 2026

CVSS v3.1
8.3
EPSS
1%
Percentile
59.4
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
8.3 · HIGH
Vector
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:L
CVSS v4.0
Not supplied
EPSS
0.00905 · 59.4th percentile
Weaknesses
CWE-287 · Improper Authentication; CWE-306 · Missing Authentication for Critical Function; CWE-693 · Protection Mechanism Failure
Published
2026-04-01T16:51Z
EPSS history
Timeline
  • 01 APR 16:51Z
    cronmaster: Middleware authentication bypass enabling unauthorized page access and server-action execution
    cvelistv5