CVE•Published 2026-04-01•Modified 2026-06-02•1 article on news•6 live references•NVD data

CVE-2026-34072Fccview · Cronmaster

Vulnerability data via NVD (ingested)

CVSS v3.1

8.3

HIGH

CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:L

EPSS percentile

Exploit Prediction Scoring System · top 73% of all CVEs

Weaknesses (CWE)

CWE-287Improper Authentication CWE-306Missing Authentication for Critical Function CWE-693Protection Mechanism Failure

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.

Timeline

Published 2026-04-01

Modified 2026-06-02

External references

NVD MITRE Exploit-DB GitHub PoC Sploitus VulnCheck

Search for exposed instances

Shodan + Censys queries derived from NVD's CPE data. The vuln tag catches assets Shodan has explicitly linked to this CVE; the product / banner fingerprints find exposed instances even when the vuln tag was never applied (which is common).

Shodan · vuln tag0 hosts

vuln:CVE-2026-34072

Hosts Shodan has explicitly fingerprinted as vulnerable.

Shodan · product

product:"Fccview Cronmaster"

All exposed Fccview Cronmaster instances — cross-reference with the CVE's affected-version range.

Shodan · banner/body mention

http.html:"Cronmaster"

HTTP body or banner mentions "Cronmaster" — catches deploys Shodan didn't identify as a product.

More intel sources (5)

Shodan report

vuln:CVE-2026-34072