SSRF in Zentao
CVE-2026-1884
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.
Vulnerability class: SSRF (Server-Side Request Forgery)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 4.7 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:L/A:L.
EPSS exploit prediction
EPSS: 0.004 (32.2th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 32nd percentile — 32.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.004 · newest: 0.004 · change: +0.000
Affected products
- Zentao
- Zentao — versions 21.7.6-85642
Weakness classification (CWE)
References
- vuldb.com/ (technical-description, VDB Entry, Third Party Advisory, vdb-entry)
- vuldb.com/ (signature, Permissions Required, permissions-required, VDB Entry)
- vuldb.com/ (VDB Entry, Third Party Advisory, third-party-advisory)
- github.com/ez-lbz/ez-lbz.github.io/issues/9 (issue-tracking, Exploit, Third Party Advisory, Issue Tracking)
- github.com/ez-lbz/ez-lbz.github.io/issues/9 (issue-tracking, Exploit, Third Party Advisory, exploit)
Frequently asked questions
- What is CVE-2026-1884?
- CVE-2026-1884 is a medium-severity vulnerability in Zentao, classified under Server-Side Request Forgery (SSRF). CVSS score: 4.7/10. Published 2026-02-04.
- How severe is CVE-2026-1884?
- Medium severity. CVSS v3 base score is 4.7 out of 10.