Is CVE-2026-34719 actively exploited?

No active exploitation of CVE-2026-34719 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2026-34719 be exploited remotely?

Yes. CVE-2026-34719 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2026-34719?

CVE-2026-34719 has a CVSS score of 4.3 (MEDIUM).

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MEDIUM

CVE-2026-34719

CWE-918Published: April 8, 2026· Updated: Apr 10, 2026

4.3

CVSS v3.1

EPSS:0.04%probability of exploitation in 30 daysPercentile:10.6th

Official Description

Zammad is a web based open source helpdesk/customer support system. Prior to 7.0.1 and 6.5.4, the webhook model was missing a proper validation for loop back addresses, or link-local addresses — only the URL scheme (HTTP/HTTPS) as well as the hostname was checked. This could end up in retrieving confidential metadata of cloud/hosting providers. The existing check is now extended and is applied when configuring webhooks as well as triggering webhook jobs. This vulnerability is fixed in 7.0.1 and 6.5.4.

NVD Source

Technical Analysis

CVE-2026-34719 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

Exploitation requires low privileges, which limits the exposure to scenarios where an attacker has already gained initial access.