CVE-2026-78140Public exploitNetwork attack vector

Stored template expression execution via unfiltered update

Published Aug 23, 2026 · Updated Aug 23, 2026

Server-side template injection in Dromara UJCMS 10.1.0 through 10.1.3 allows remote authenticated users to alter rendered pages. AbstractWebFileController.update writes API-supplied params.text directly to a template file, which FreeMarker evaluates when the frontend renders it. High-privilege template-update authority and a valid JWT are required; expressions execute on the server, and injected JavaScript runs only in a visitor's browser, while FreeMarker restrictions block the demonstrated path to server-side code execution.

CVSS severity5.1
Medium
EPSS probability0.24%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Server-side template injection in Dromara UJCMS 10.1.0 through 10.1.3 allows remote authenticated users to alter rendered pages. AbstractWebFileController.update writes API-supplied params.text directly to a template file, which FreeMarker evaluates when the frontend renders it. High-privilege template-update authority and a valid JWT are required; expressions execute on the server, and injected JavaScript runs only in a visitor's browser, while FreeMarker restrictions block the demonstrated path to server-side code execution.

The record

CVE
CVE-2026-78140
Published
Aug 23, 2026
Updated
Aug 23, 2026
Vendor
Dromara
Product
UJCMS
Classifications
CWE-791, CWE-1336, T1059.007
Attack vector
network
Privileges
admin

Timeline

How it unfolded

  1. Aug 23, 2026CVE publishedPublication date reported by the CVE source.
  2. Aug 23, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=10.1.0
  2. Affected versionversion=10.1.1
  3. Affected versionversion=10.1.2
  4. Affected versionversion=10.1.3

What conditions does exploitation require?

Attack vectornetwork
Required privilegesadmin

What is affected?

Dromara · UJCMSversion=10.1.0; version=10.1.1; version=10.1.2; version=10.1.3

Published CVSS scores

4.7VulDBCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:L/A:L
4.7VulDBCVSS:3.0/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:L/A:L
5.8VulDBAV:N/AC:L/Au:M/C:P/I:P/A:P
5.1VulDBCVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesadmin
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-791Incomplete Filtering of Special Elements
CWE-1336Improper Neutralization of Special Elements Used in a Template Engine
T1059.007Command and Scripting Interpreter: JavaScript/JScript

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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