CVE-2026-56724CWE-639CWE-862broken-access-control

CVE-2026-56724

published September 25, 2026

CVSS
7.1
EPSS
0%
Percentile
18.7
In the wild
Unconfirmed
What it is

Zammad is a web based open source helpdesk/customer support system. Prior to 7.0.2, summary An issue with permission checks in the knowledge base management area has been identified. Under certain conditions, data validation for linked items was not fully enforced. This could have allowed users with limited read permissions to interact with items outside their assigned access scope. Data access has been strengthened in the current version through additional validation routines. This issue is fixed in version 7.0.2.

The record
Technical detail
CVSS
7.1 · NONE
CVSS v4.0
7.1 · CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N
EPSS
0.00274 · 18.7th percentile
Weaknesses
CWE-639 · Authorization Bypass Through User-Controlled Key; CWE-862 · Missing Authorization
Published
2026-09-25T21:17Z
References (3)
EPSS history
Timeline
  • 27 SEP 03:26Z
    EPSS moved — → 0%
    epss
  • 25 SEP 16:46Z
    Zammad: Incorrect implementation of permission checks in the knowledge base module
    cvelistv5