High CVSS 7.1

CVE-2026-13229

NVD analysis in progress

Zammad 7.1.0 contains an authenticated improper authorization vulnerability in the ticket article attachment cloning endpoint.

What this means

Exposure: Exploitable remotely over the network, with an ordinary user account and with no action from the victim.
Impact: An attacker can read sensitive data.
Weakness: No authorisation check happens before the action.
Likelihood: Its EPSS score stays low: nothing points to imminent exploitation, which is no reason to leave it unpatched.

What to doFold into the next patch cycle.

Read automatically from the CVSS vector, the weakness type (CWE) and the EPSS score. The technical description above remains the one published by NIST.

Published: 4 August 2026
CVSS: 7.1 (v4.0) 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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
EPSS: 0.25% probability of exploitation within 30 days · above 16% of all CVEs
Weakness: CWE-862
Sources: nvd

References

https://nvd.nist.gov/vuln/detail/CVE-2026-13229