CVE-2026-1884 ZenTao Webhook model.php fetchHook server-side request forgery

Medium 5.1 Published 4 Feb 2026 Updated 23 Feb 2026

Remote attackers can exploit a server-side request forgery vulnerability in ZenTao's Webhook module to access internal resources or bypass security controls.

Exploited in the wild: Not known
Login needed: An administrator
Attackable: Over the internet
Victim action needed: Not needed
Fix: None listed

What is CVE-2026-1884?

CVE-2026-1884 is a medium-severity server-side request forgery vulnerability in ZenTao, published on 4 Feb 2026. An attacker needs administrator access to exploit it, with no action from the victim.

Official description

A weakness has been identified in ZenTao up to 21.7.6-85642. The impacted element is the function fetchHook of the file module/webhook/model.php of the component Webhook Module. This manipulation causes server-side request forgery. The attack may be initiated remotely. The exploit has been made available to the public and could be used for attacks. The vendor was contacted early about this disclosure but did not respond in any way.

Weakness: CWE-918

Which versions are affected by CVE-2026-1884?

It affects 1 product.

Products include Zentao Zentao.

How do I fix CVE-2026-1884?

No fix has been published for CVE-2026-1884 yet. Limit exposure of the affected software until one is available.

Upgrade, and send outbound requests through an allow-list that blocks internal addresses. More about Server-side request forgery.

Is CVE-2026-1884 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-1884 exists.

Sources

Also known as GHSA-rxcq-q6q7-hm9r.