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🛡️ CVE-2026-33229 — xwiki

🔴 CVSS 9.8 — Critical ✅ No Known Exploit CWE-862 NVD
9.8
CVSS Score
0 Low4 Medium7 High9 Critical10

Description

XWiki vulnerable to remote code execution with script right through unprotected Velocity scripting API

Impact

An improperly protected scripting API allows any user with script right to bypass the sandboxing of the Velocity scripting API and execute, e.g., arbitrary Python scripts, allowing full access to the XWiki instance and thereby compromising the confidentiality, integrity and availability of the whole instance. Note that script right already constitutes a high level of access that we don't recommend giving to untrusted users.

Patches

The vulnerability has been patched in XWiki 17.4.8 and 17.10.1 by requiring programming right to access the affected scripting API.

Workarounds

We're not aware of any workarounds except for being careful whom you grant script right.

Attribution

We thank Youssef Azefzaf for discovering and reporting this vulnerability.

How this vulnerability can be exploited

This issue can be reached over the network, attack complexity is low, an attacker needs no privileges on the target. No user interaction is required. The scope is unchanged, so the impact stays within the vulnerable component. Rated impact: confidentiality high, integrity high, availability high.

CVSS metrics in full

The score comes from this vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

  • Attack vector: Network — reachable from anywhere that can route to the service.
  • Attack complexity: Low — the attack works reliably, with no preparation.
  • Privileges required: None — an unauthenticated stranger can try it.
  • User interaction: None — nobody has to be tricked into anything.
  • Scope: Unchanged — the damage stays inside the vulnerable component.
  • Confidentiality impact: High — total loss, or loss the attacker controls.
  • Integrity impact: High — total loss, or loss the attacker controls.
  • Availability impact: High — total loss, or loss the attacker controls.

Weakness class

CVE-2026-33229 is classified as CWE-862: Missing Authorization. No authorisation check is performed before carrying out a restricted action.

Affected software

CVE-2026-33229 is recorded against 3 packages.

  • org.xwiki.platform:xwiki-platform-legacy-oldcore (from 17.5.0-rc-1 up to 17.10.1)
  • org.xwiki.platform:xwiki-platform-oldcore (from 17.5.0-rc-1 up to 17.10.1)
  • xwiki (from 17.5.0 up to 17.10.1)

Timeline and source

Published on 8 April 2026. No public exploit is currently recorded for this entry. A vendor advisory or fix has been published. Record sourced from NVD.

References

github.com (Web)
nvd.nist.gov (Advisory)
github.com (Web)
github.com (Package)
jira.xwiki.org (Web)
jira.xwiki.org (Web)

Other advisories for this package

org.xwiki.platform:xwiki-platform-legacy-oldcore has other advisories on record. If you are patching this one, these are worth checking on the same host:

Same weakness in other software

These advisories are the same class of weakness (CWE-862: Missing Authorization) in other software:

Details

Severity HIGH
CVSS Score 9.8
CVSS Vector CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CWE CWE-862
Public Exploit ✅ No
Source NVD
Published 2026-04-08
Updated 2026-08-20
Modified 2026-04-08

Affected Packages

Software From version Fixed in
org.xwiki.platform:xwiki-platform-legacy-oldcore 17.5.0-rc-1 17.10.1
org.xwiki.platform:xwiki-platform-oldcore 17.5.0-rc-1 17.10.1
xwiki 17.5.0 17.10.1

Similar Threats

Exploit Protection

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CVE-2026-33229 carries CVSS 9.8 Critical rating. BotEraser checks your installation against this and other known CVE records, and blocks IPs associated with exploit activity.

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ⓘ Data Notice: The information presented above has been compiled from publicly available internet sources. Boteraser aggregates this data solely for informational purposes and does not independently classify, evaluate, or endorse any findings about the vulnerabilities listed. The accuracy and completeness of this information is the sole responsibility of the original publishers. Boteraser and its operators accept no liability for any decisions made based on this data.

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