CVE-2025-51990Public exploitNetwork attack vector

Stored script execution via unencoded presentation fields

Published Aug 20, 2025 · Updated Aug 20, 2025

Stored XSS in XWiki 17.3.0 and earlier allows remote authenticated users to execute JavaScript in visitors' browsers. The Presentation section stores HTTP Meta Info, Footer Copyright, and Footer Version values and renders them on public pages without output encoding or sanitization. Administrative access is required to plant a payload; any subsequent visitor can trigger it, exposing browser-session data and actions available to that visitor.

CVSS severity4.8
Medium
EPSS probability0.50%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Stored XSS in XWiki 17.3.0 and earlier allows remote authenticated users to execute JavaScript in visitors' browsers. The Presentation section stores HTTP Meta Info, Footer Copyright, and Footer Version values and renders them on public pages without output encoding or sanitization. Administrative access is required to plant a payload; any subsequent visitor can trigger it, exposing browser-session data and actions available to that visitor.

The record

CVE
CVE-2025-51990
Published
Aug 20, 2025
Updated
Aug 20, 2025
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-79, T1189
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

4.8CISA ADP VulnrichmentCVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A: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.

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No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 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')
T1189Drive-by Compromise

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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