CVE-2023-29516Public exploitNetwork attack vector

Server-side code execution via unescaped cancel target

Published Apr 18, 2023 · Updated Feb 5, 2025

Code injection in XWiki Platform allows remote authenticated users with page-view rights to execute server-side scripts. XWiki.AttachmentSelector inserts an attacker-controlled document name into the cancel-link target without XWiki-syntax escaping, allowing Groovy, Python, or Velocity directives to be evaluated. The page is installed by default, and view rights alone expose code execution with full access to the XWiki installation.

CVSS severity9.9
Critical
EPSS probability65.87%
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 allows remote authenticated users with page-view rights to execute server-side scripts. XWiki.AttachmentSelector inserts an attacker-controlled document name into the cancel-link target without XWiki-syntax escaping, allowing Groovy, Python, or Velocity directives to be evaluated. The page is installed by default, and view rights alone expose code execution with full access to the XWiki installation.

The record

CVE
CVE-2023-29516
Published
Apr 18, 2023
Updated
Feb 5, 2025
Vendor
CryptPad
Product
XWiki Platform
Classifications
CWE-95, 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

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Is a vulnerable build present?

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

  1. Affected versionversion=< 13.10.11
  2. Affected versionversion=>= 14.0.0, < 14.4.8
  3. Affected versionversion=>= 14.5.0, < 14.10.1

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

CryptPad · XWiki Platformversion=< 13.10.11; version=>= 14.0.0, < 14.4.8; version=>= 14.5.0, < 14.10.1

Published CVSS scores

8.8NVDCVSS: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:L

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 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-95Improper Neutralization of Directives in Dynamically Evaluated Code ('Eval Injection')
CWE-74Improper Neutralization of Special Elements in Output Used by a Downstream Component ('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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