CVE-2026-34072: Cr*nMaster (cronmaster) is a Cronjob management UI with human readable syntax, live logging and log history fo

Q: How do I fix CVE-2026-34072?

cronmaster: upgrade to 2.2.0. Exact commands for each OS are on this page.

Q: Is CVE-2026-34072 being exploited?

CVE-2026-34072 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2026-34072 affect?

CVE-2026-34072 affects cronmaster. Severity is high (CVSS 8.3). 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

Routine

HIGH 8.3UPGRADE

CVE-2026-34072 is a high-severity flaw (CVSS 8.3) affecting cronmaster. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

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 Act

Why this priority

High severity

A fixed release or distro patch exists.

Risk facts

CVSS score	8.3 (High)
Attack vector	Adjacent network
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	0.4% (top 62%)
CISA exploited list	No
Weakness	CWE-287, CWE-306, CWE-693
Published	2026-04-01
Last modified	2026-10-26

Publisher (CNA): GitHub, Inc. · Vendor: fccview

Last updated 2026-10-26 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-04-01 18:16 UTCPublished CVE record published
2026-10-26 22:10 UTCUpdated Record last modified

fccview cronmaster UPGRADE

Affected: < 2.2.0

Fixed in: 2.2.0

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy cronmaster || rpm -q cronmaster || cronmaster --version

2. UPGRADE to 2.2.0 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade cronmaster

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade cronmaster

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2026-34072?

cronmaster: upgrade to 2.2.0. Exact commands for each OS are on this page.

Is CVE-2026-34072 being exploited?

CVE-2026-34072 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2026-34072 affect?

CVE-2026-34072 affects cronmaster. Severity is high (CVSS 8.3). 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

How urgent is CVE-2026-34072?

Priority 39/100. High severity

Software pages

Next.js vulnerabilities

References

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