CVE-2023-29525Public exploitNetwork attack vector

Authenticated code execution via unescaped since parameter

Published Apr 18, 2023 · Updated Feb 5, 2025

Code injection in XWiki Platform before 14.4.8 and 14.5.0 through 14.10.2 allows remote authenticated users to execute server code. LegacyNotificationAdministration inserts the since parameter into a date input without XML escaping, allowing crafted XWiki syntax to terminate the HTML context and run a script macro. View access is sufficient; successful exploitation grants programming rights and arbitrary code execution in the server context.

CVSS severity9.9
Critical
EPSS probability77.75%
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 XWiki Platform before 14.4.8 and 14.5.0 through 14.10.2 allows remote authenticated users to execute server code. LegacyNotificationAdministration inserts the since parameter into a date input without XML escaping, allowing crafted XWiki syntax to terminate the HTML context and run a script macro. View access is sufficient; successful exploitation grants programming rights and arbitrary code execution in the server context.

The record

CVE
CVE-2023-29525
Published
Apr 18, 2023
Updated
Feb 5, 2025
Vendor
CryptPad
Product
XWiki Platform
Classifications
CWE-116, CWE-74, T1059
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Apr 18, 2023CVE publishedPublication date reported by the CVE source.
  2. Feb 5, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=< 14.4.8
  2. Affected versionversion=>= 14.5.0, < 14.10.3.

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

CryptPad · XWiki Platformversion=< 14.4.8; version=>= 14.5.0, < 14.10.3.

Published CVSS scores

8.8NIST NVDCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
9.9GitHubCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/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.

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-116Improper Encoding or Escaping of Output
CWE-74Improper Neutralization of Special Elements in Output Used by a Downstream Component
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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