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CVE Record

CVE-2026-9498: Dromara lamp-cloud Message Template GroovyClassLoader.parseClass special elements used in a template engine

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.

MediumCVSS 6.5Not KEV-listed Updated
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Glexia's Take moderate

Analyst readout for executives and security teams

Plain-English summary

CVE-2026-9498 affects Dromara lamp-cloud message templates. A user with access to the template function may be able to abuse template content processing, potentially affecting data confidentiality, integrity, and service availability. Public proof-of-concept information is reported, but the bundle does not show confirmed active exploitation or an official fix.

Executive priority

Treat this as a near-term remediation item for affected lamp-cloud environments, especially where many users can edit templates. It is not KEV-listed in the bundle, but public exploit disclosure raises urgency.

Technical view

The issue is in GroovyClassLoader.parseClass within the Message Template Handler, where DefMsgTemplate.content is not properly neutralized for special template-engine elements. Sources list lamp-cloud 5.6.0, 5.6.1, and 5.6.2 as affected. CVSS v2 is 6.5 with network reachability, low complexity, and single authenticated access required.

Likely exposure

Exposure is likely limited to organizations running Dromara lamp-cloud 5.6.0 through 5.6.2 where authenticated users can reach message template management or related APIs.

Exploitation context

The source bundle says public exploit information exists and remote attack is possible. It does not cite CISA KEV or any source confirming active exploitation in the wild.

Researcher notes

Evidence is mostly from VulDB and the referenced public report. Vendor non-response is reported, and no official patch details are included. Avoid assuming unauthenticated exposure; the CVSS vector indicates authenticated access is required.

Mitigation direction

  • Check Dromara/lamp-cloud project guidance for a patched release or official workaround.
  • Restrict message template management to trusted administrative users only.
  • Temporarily disable or tightly govern template editing if operations allow.
  • Review existing message templates for unexpected or unauthorized changes.
  • Monitor the cited advisories for vendor response and remediation updates.

Validation and detection

  • Inventory Dromara lamp-cloud deployments and confirm exact running versions.
  • Identify whether versions 5.6.0, 5.6.1, or 5.6.2 are deployed.
  • Review who can create or modify message templates.
  • Inspect audit logs for unusual template changes or parsing errors.
  • Track whether the vendor publishes a fixed version or workaround.
Prepared
Confidence
medium
Sources
6

Public sources used

Based on public source material and reviewed before publication.

Potential ATT&CK relevance

Conservative CVE-to-ATT&CK context

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ATT&CK lookup starting points

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cwe · low confidence lookup

CWE-1336: Exact CWE lookup

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cwe · low confidence lookup

CWE-791: Exact CWE lookup

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cve · low confidence lookup

CVE-2026-9498 mapping review

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Vulnerability profile CVE Program record
Severity
Medium
CVSS
6.5 (2.0)
Known Exploited
No
Published

Vector: AV:N/AC:L/Au:S/C:P/I:P/A:P/E:POC/RL:ND/RC:UR

Official CVE source material

CNA and ADP enrichment extracted from CVE v5

These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.

4 CVSS vectors
6 Timeline events
0 ADP providers
5 Source links

CVSS vector scores

4 official scores

We collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.

Score Version Severity Vector Exploit Impact Source
6.5 CVSS 2.0 Medium AV:N/AC:L/Au:S/C:P/I:P/A:P/E:POC/RL:ND/RC:UR 8 6.4 VulDB
6.3 CVSS 3.1 Medium CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L/E:P/RL:X/RC:R 2.8 3.4 VulDB
6.3 CVSS 3.0 Medium CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L/E:P/RL:X/RC:R 2.8 3.4 VulDB
5.3 CVSS 4.0 Medium CVSS: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 — — VulDB

Vulnerability scoring details

Base CVSS 4.0 score

5.3 Medium
CVSS 4.0 vector shape for CVE-2026-9498 Attack VectorAttack ComplexityAttack RequirementsPrivileges RequiredUser InteractionVS ConfidentialityVS IntegrityVS AvailabilitySS ConfidentialitySS IntegritySS Availability

Vector: CVSS: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

Attack Vector
NetworkAdjacentLocalPhysical
Attack Complexity
LowHigh
Attack Requirements
NonePresent
Privileges Required
NoneLowHigh
User Interaction
NonePassiveActive
VS Confidentiality
HighLowNone
VS Integrity
HighLowNone
VS Availability
HighLowNone
SS Confidentiality
HighLowNone
SS Integrity
HighLowNone
SS Availability
HighLowNone

Vulnerability timeline

Timeline events are normalized from CVE metadata, CNA source timelines, ADP timelines, and KEV metadata when present.

  1. Source timeline VulDB

    Advisory disclosed

  2. Source timeline VulDB

    VulDB entry created

  3. CVE reserved CVE Program

    The CVE ID was reserved by the assigning CNA.

  4. Source timeline VulDB

    VulDB entry last update

  5. CVE published CVE Program

    The CVE record was published.

  6. CVE updated CVE Program

    The CVE record metadata indicates this as the latest update time.

Source materials

Affected products

Products and packages named in the record

Vendor Product Version / package Status
Dromara lamp-cloud 5.6.0, 5.6.1, 5.6.2 Listed
Weakness

CWE details

CWE-1336CWE-791

CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.

CWE-1336 · source CWE mapping

CWE mapping pending import

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CWE-791 · source CWE mapping

CWE mapping pending import

This CVE carries a CWE mapping that will resolve to a full Glexia CWE intelligence page after the official CWE import is complete.

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