CVE-2026-55240 Tianji - Server-Side Template Injection

Tianji < 1.31.29 contains a server-side template injection caused by unsafe use of lodash template() with default evaluate pattern in survey and monitor templates, letting workspace administrators execute arbitrary server-side JavaScript via public survey.submit endpoint, exploit requires workspace administrator to store malicious template.

CVSS base score 9.1 /10
Critical
CISA KEV
Not listed
Public exploit
None known
Authentication
Required
View the NVD record ↗

Details

Type
Template Injection
Impact
Remote Code Execution, Information Disclosure, Data Tampering, Denial Of Service
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H
Published
15 October 2026
Updated
16 October 2026
Weakness
CWE-1336

Vendor fix

Update to version 1.31.29 or later.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

References

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