How severe is CVE-2026-34072?

CVE-2026-34072 has a CVSS 3.x base score of 8.3, rated high severity. It is exploitable over an adjacent network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability low.

Is CVE-2026-34072 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (36th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-34072?

CVE-2026-34072 affects Fccview Cronmaster. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-34072?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

Does CVE-2026-34072 have an EU (EUVD) identifier?

Yes. CVE-2026-34072 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-17971.

When was CVE-2026-34072 published?

CVE-2026-34072 was published on 2026-04-01 and last updated on 2026-06-17.

CVE-2026-34072

CVE-2026-34072 is a high-severity vulnerability in Fccview Cronmaster with a CVSS 3.x base score of 8.3. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-287.

Key facts

Severity: High (CVSS 3.x base score 8.3)
EPSS exploit prediction: 0% (36th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-17971
Weakness: CWE-287
Affected product: Fccview Cronmaster
Published: 2026-04-01
Last modified: 2026-06-17

Description

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.

Frequently asked questions

What is CVE-2026-34072?: 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.
How severe is CVE-2026-34072?: CVE-2026-34072 has a CVSS 3.x base score of 8.3, rated high severity. It is exploitable over an adjacent network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability low.
Is CVE-2026-34072 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (36th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-34072?: CVE-2026-34072 affects Fccview Cronmaster. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-34072?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
Does CVE-2026-34072 have an EU (EUVD) identifier?: Yes. CVE-2026-34072 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-17971.
When was CVE-2026-34072 published?: CVE-2026-34072 was published on 2026-04-01 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:fccview:cronmaster:*:*:*:*:*:*:*:*

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