Auth bypass in Znuny

CVE-2025-26846

An issue was discovered in Znuny before 7.1.4. Permissions are not checked properly when using the Generic Interface to update ticket metadata.

Vulnerability class: Broken Access Control

EPSS: 0.004 (28.1th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

Affected products

  • Znuny
  • N/a — versions n/a

Weakness classification (CWE)

References

Frequently asked questions

What is CVE-2025-26846?
CVE-2025-26846 is a critical-severity vulnerability in Znuny, classified under Missing Authorization. CVSS score: 9.8/10. Published 2025-05-12.
How severe is CVE-2025-26846?
Critical severity. CVSS v3 base score is 9.8 out of 10.