CVE-2021-32621Public exploitNetwork attack vector

Authenticated code execution via unchecked Velocity gadget titles

Published May 28, 2021 · Updated Aug 3, 2024

Code injection in XWiki Platform before 12.6.7 and 12.10.0 through 12.10.2 allows remote authenticated users to execute server-side code. DefaultGadgetSource passes each dashboard gadget title directly to VelocityEngine.evaluate without first checking the document author's Script right. A registered user who can edit a personal dashboard can inject a Velocity expression that instantiates scripting engines and reads files or executes arbitrary code with the application server's privileges.

CVSS severity8.8
High
EPSS probability2.10%
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 12.6.7 and 12.10.0 through 12.10.2 allows remote authenticated users to execute server-side code. DefaultGadgetSource passes each dashboard gadget title directly to VelocityEngine.evaluate without first checking the document author's Script right. A registered user who can edit a personal dashboard can inject a Velocity expression that instantiates scripting engines and reads files or executes arbitrary code with the application server's privileges.

The record

CVE
CVE-2021-32621
Published
May 28, 2021
Updated
Aug 3, 2024
Vendor
CryptPad
Product
XWiki Platform
Classifications
CWE-94, T1068
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. May 28, 2021CVE publishedPublication date reported by the CVE source.
  2. Aug 3, 2024Record 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=>= 12.10.0, < 12.10.3
  2. Affected versionversion=< 12.6.7

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

CryptPad · XWiki Platformversion=>= 12.10.0, < 12.10.3; version=< 12.6.7

Published CVSS scores

6.5NIST NVDAV:N/AC:L/Au:S/C:P/I:P/A:P
8.8GitHub, Inc.CVSS: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.

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-94Improper Control of Generation of Code ('Code Injection')
T1068Exploitation for Privilege Escalation

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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