TI-2025-23440 Aliases CVE-2025-32358 GHSA-h7vp-w2vp-6c97

Server-side request forgery in Zammad

LOW 19CWE-918Published 2025-04-05 · Updated 2025-04-07

Key facts

Attack vector: Network
Privileges required: High
User interaction: None
Attack complexity: Low
Impact type: Information disclosure
Confidentiality · integrity · availability: Low · None · None
Fix status: Fixed

Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-918 and the CVSS impact.

Summary

In Zammad 6.4.x before 6.4.2, SSRF can occur. Authenticated admin users can enable webhooks in Zammad, which are triggered as POST requests when certain conditions are met. If a webhook endpoint returned a redirect response, Zammad would follow it automatically with another GET request. This could be abused by an attacker to cause GET requests for example in the local network.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV

EPSS 0.00278 20th percentileScored 2026-11-07

Fix Fixed Zammad (Zammad): 6.4.2

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation: None
Automatable: No
Technical impact: Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
Zammad GmbH	Zammad	6.4 to before 6.4.2	6.4.2	Patch available	CNA

Zammad VendorZammad GmbH Affected 6.4 to before 6.4.2 Fixed in 6.4.2 Patch available CNA

CPE configurations NVD · 1

CPE	Versions	Role	Vendor
cpe:2.3:a:zammad:zammad::::::::	6.4.0 to before 6.4.2	Vulnerable	Zammad GmbH

cpe:2.3:a:zammad:zammad:*:*:*:*:*:*:*:* Versions 6.4.0 to before 6.4.2 Vulnerable ·Zammad GmbH

Remediation

Fix · CNA Zammad (Zammad) Fixed in 6.4.2

Fixed in the same release

Records fixed by the same vendor advisory or release, as the CNA lists them.

Release · 2025-04-05
Zammad 6.4.2
4 records Highest priority Priority LOW 4 LOW
Other records, highest priority first
- TI-2025-23441 In Zammad 6.4.x before 6.4.2, there is client-side enforcement of server-side security.Priority LOW 38
- TI-2025-23442 In Zammad 6.4.x before 6.4.2, there is information exposure.Priority LOW 35
- TI-2025-23439 Authentication bypass in ZammadPriority LOW 20
Show all 4 records →

Timeline

2026-10-02 Threatist record created from CVE-2025-32358
2026-10-03 Alias added: GHSA-h7vp-w2vp-6c97

References

Advisory 1

https://zammad.com/en/advisories/zaa-2025-01

TI-2026-65406 Local privilege escalation in Zammad v1.5.0 to v7.2.2 installed via DEB or RPM package KEVCVSS 4.0CRITICAL 9.4
TI-2026-65405 Undisclosed RCE in Zammad v6.3 and higher KEVCVSS 4.0CRITICAL 9.4
TI-2024-22252 An issue was discovered in Zammad before 6.3.0. CVSS 3.1CRITICAL 9.1
TI-2022-23785 A vulnerability in Zammad v5.3.0 allows attackers to execute arbitrary code or escalate… CVSS 3.1CRITICAL 9.8
TI-2021-18599 An issue was discovered in Zammad before 4.1.1. CVSS 3.1CRITICAL 9.8
TI-2021-18603 An issue was discovered in Zammad before 4.1.1. CVSS 3.1CRITICAL 9.8

See all 91 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences