XSS in Datagerry
CVE-2026-57853
DataGerry before 3.3.0 contains a server-side template injection vulnerability that allows authenticated attackers with base.docapi.template.add permission to store arbitrary Jinja2 payloads in the template_data field via POST /rest/docapi/template, which is later rendered in a non-sandboxed Jinja2 environment when a user calls GET /rest/docapi/template/<id>/render/<object_id>. Attackers can exploit the standard cycler.__init__.__globals__.os gadget chain to execute arbitrary operating system commands as the DataGerry web process user, confirmed as root in default Docker deployments, achieving remote code execution.
Vulnerability class: XSS (Cross-Site Scripting)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.
Affected products
Weakness classification (CWE)
References
- DataGerry 3.3.0 Release Notes (release-notes, patch)
- Changelog (release-notes)
- VulnCheck Advisory: DataGerry < 3.3.0 SSTI via DocAPI Template Rendering (third-party-advisory)
Frequently asked questions
- What is CVE-2026-57853?
- CVE-2026-57853 is a high-severity vulnerability in Datagerry, classified under Cross-site Scripting. CVSS score: 8.8/10. Published 2026-11-04.
- How severe is CVE-2026-57853?
- High severity. CVSS v3 base score is 8.8 out of 10.