CVE-2026-9498Public exploitNetwork attack vector

Authenticated code execution via unsandboxed Groovy templates

Published May 25, 2026 · Updated May 25, 2026

Code injection in Dromara lamp-cloud 5.6.2 and earlier allows remote authenticated users to execute arbitrary code through message templates. The message-template save path accepts unsanitized Groovy in DefMsgTemplate.script, and GlueFactory passes it to GroovyClassLoader.parseClass before running it. Administrative template-write access is required; execution occurs when the stored template is used, granting application-server code execution.

CVSS severity5.3
Medium
EPSS probability0.29%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Code injection in Dromara lamp-cloud 5.6.2 and earlier allows remote authenticated users to execute arbitrary code through message templates. The message-template save path accepts unsanitized Groovy in DefMsgTemplate.script, and GlueFactory passes it to GroovyClassLoader.parseClass before running it. Administrative template-write access is required; execution occurs when the stored template is used, granting application-server code execution.

The record

CVE
CVE-2026-9498
Published
May 25, 2026
Updated
May 25, 2026
Vendor
Dromara
Product
lamp-cloud
Classifications
CWE-1336, T1059
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. May 25, 2026CVE publishedPublication date reported by the CVE source.
  2. May 25, 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=5.6.0
  2. Affected versionversion=5.6.1
  3. Affected versionversion=5.6.2

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Dromara · lamp-cloudversion=5.6.0; version=5.6.1; version=5.6.2

Published CVSS scores

5.3VulDBCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N
6.5VulDBAV:N/AC:L/Au:S/C:P/I:P/A:P
6.3VulDBCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L

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
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-1336Improper Neutralization of Special Elements Used in a Template Engine
T1059Command and Scripting Interpreter

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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