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CVE-2026-57853: DataGerry Cross Site Scripting Vulnerability

CVE-2026-57853 explained: high Cross Site Scripting in DataGerry. CVSS 8.7. Affected versions, detection, fixes and CTEM priority.

Last updated: Nov 4, 2026

CVSS
8.7 HIGH
EPSS
n/a
CISA KEV
Not listed
CWE
CWE-79

Sources: National Vulnerability Database, CVE.org, CISA KEV, FIRST EPSS

CVE-2026-57853 Overview

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.

Critical Impact

Remote, authenticated attackers can exploit this Cross Site Scripting in DataGerry. The CVSS base score is 8.7 (High).

Affected Products

  • DataGerry: see the vendor advisory for the exact affected versions

Discovery Timeline

  • 2026-11-04: CVE-2026-57853 published to the National Vulnerability Database by disclosure@vulncheck.com
  • 2026-11-04: last updated in the NVD database

Technical Details for CVE-2026-57853

Vulnerability Analysis

CVE-2026-57853 is a Cross Site Scripting weakness (CWE-79: Cross Site Scripting, CWE-1336) in DataGerry. Based on its CVSS vector, the flaw can be reached over the network, needs some level of access, and needs no user interaction. Attacker supplied script runs in another user's browser inside the trusted site.

With a CVSS base score of 8.7, apply the vendor fix and confirm exposure on internet facing and business critical assets first.

Root Cause

The weakness is classified as CWE-79: Cross Site Scripting, CWE-1336. Attacker supplied script runs in another user's browser inside the trusted site.

Attack Vector

Based on the CVSS vector, the flaw can be reached over the network, needs some level of access, and needs no user interaction. Attack complexity is low complexity.

No exploitation in the wild is confirmed by CISA at the time of the last update. Check the references below for any vendor or researcher proof of concept.

CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Detection Methods for CVE-2026-57853

Detection Strategies

  • Inventory every instance of DataGerry and compare the running version with the affected range above.
  • Check external attack surface scans for internet facing instances of the component.
  • Run an authenticated vulnerability scan once your scanner ships a check for this CVE.

Monitoring Recommendations

  • Forward DataGerry application, access and audit logs to your SIEM for retrospective hunting.
  • Alert on new processes, configuration changes or outbound connections from the affected service.
  • Track the vendor advisory and the CISA KEV catalog for changes in exploitation status.

How to Mitigate CVE-2026-57853

Immediate Actions Required

  • Apply the fixed version of DataGerry named in the vendor advisory.
  • Prioritize internet facing and business critical instances first.
  • Rescan after the change to confirm the exposure is closed.

Patch Information

Use the fixed version listed in the vendor advisory for DataGerry.

Workarounds

  • If patching must wait, restrict network access to the affected service and place it behind authentication or a web application firewall rule.

CWE References

Technical References

This entry is built directly from NVD, CISA KEV and EPSS data. Verify fixed versions in the vendor advisory before you deploy.

Frequently asked questions

CVE-2026-57853 is a high severity Cross Site Scripting in DataGerry with a CVSS score of 8.7. Apply the vendor fix and confirm exposure on internet facing and business critical assets first.

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