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Description

A vulnerability has been found in Dromara lamp-cloud up to 5.6.2. Impacted is the function GroovyClassLoader.parseClass of the component Message Template Handler. Such manipulation of the argument DefMsgTemplate.content leads to improper neutralization of special elements used in a template engine. It is possible to launch the attack remotely. The exploit has been disclosed to the public and may be used. The vendor was contacted early about this disclosure but did not respond in any way.

PUBLISHED Reserved 2026-05-25 | Published 2026-05-25 | Updated 2026-05-28 | Assigner VulDB




MEDIUM: 5.3CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P
MEDIUM: 6.3CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L/E:P/RL:X/RC:R
MEDIUM: 6.3CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L/E:P/RL:X/RC:R
6.5AV:N/AC:L/Au:S/C:P/I:P/A:P/E:POC/RL:ND/RC:UR

Problem types

Improper Neutralization of Special Elements Used in a Template Engine

Incomplete Filtering of Special Elements

Product status

5.6.0
affected

5.6.1
affected

5.6.2
affected

Timeline

2026-05-25:Advisory disclosed
2026-05-25:VulDB entry created
2026-05-25:VulDB entry last update

Credits

Ku4D3 (VulDB User) reporter

VulDB CNA Team coordinator

References

vuldb.com/vuln/365481 (VDB-365481 | Dromara lamp-cloud Message Template GroovyClassLoader.parseClass special elements used in a template engine) vdb-entry technical-description

vuldb.com/vuln/365481/cti (VDB-365481 | CTI Indicators (IOB, IOC, TTP, IOA)) signature permissions-required

vuldb.com/submit/814103 (Submit #814103 | dromara lamp-cloud releases Injection) third-party-advisory

github.com/Ku4D3/bug_story/blob/main/report_02.md exploit

cve.org (CVE-2026-9498)

nvd.nist.gov (CVE-2026-9498)

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