CVE-2025-51991Public exploitNetwork attack vector

Template code execution via unsandboxed HTTP metadata

Published Aug 20, 2025 · Updated Aug 20, 2025

Server-side template injection in XWiki 17.3.0 and earlier allows remote authenticated users to execute Velocity code through HTTP Meta Info. The Global Preferences Presentation section passes the administrator-controlled HTTP Meta Info value to Apache Velocity for server-side rendering without validation or sandboxing. Administrative access is required; executed template logic can expose internal server data and, when the engine configuration permits, execute server-side code.

CVSS severity8.8
High
EPSS probability3.69%
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 XWiki 17.3.0 and earlier allows remote authenticated users to execute Velocity code through HTTP Meta Info. The Global Preferences Presentation section passes the administrator-controlled HTTP Meta Info value to Apache Velocity for server-side rendering without validation or sandboxing. Administrative access is required; executed template logic can expose internal server data and, when the engine configuration permits, execute server-side code.

The record

CVE
CVE-2025-51991
Published
Aug 20, 2025
Updated
Aug 20, 2025
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-79, CWE-94, T1059
Attack vector
network
Privileges
admin

Timeline

How it unfolded

  1. Aug 20, 2025CVE publishedPublication date reported by the CVE source.
  2. Aug 20, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectornetwork
Required privilegesadmin

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

8.8CISA-ADPCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

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.

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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-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
CWE-94Improper Control of Generation of Code ('Code Injection')
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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