CVE-2020-26032

Severity: high (CVSS 7.5 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 1.1% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2020-12-28 · updated 2026-06-17
Weakness: CWE-918

Description

An SSRF issue was discovered in Zammad before 3.4.1. The SMS configuration interface for Massenversand is implemented in a way that renders the result of a test request to the User. An attacker can use this to request any URL via a GET request from the network interface of the server. This may lead to disclosure of information from intranet systems.

Affected products

zammad: from 1.0.0 before 3.4.1 — fixed in 3.4.1

How to fix

Upgrade to a fixed version: zammad 3.4.1. Check the vendor advisory for mitigations.

References

https://zammad.com/news/security-advisory-zaa-2020-15
https://zammad.com/news/security-advisory-zaa-2020-15

Get alerted when CVE-2020-26032 or the next vulnerability affects your stack