Vulnerability in XWiki Platform (CVE-2026-33229)
Summary
Vulnerability in XWiki Platform (CVE-2026-33229). Successful exploitation can lead to full system takeover. Mitigation: upgrade to 17.4.8 or later.
Original description
The description as published by the source.
XWiki Platform is a generic wiki platform offering runtime services for applications built on top of it. Prior to 17.4.8 and 17.10.1, 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. This vulnerability is fixed in 17.4.8 and 17.10.1.
Source: NIST National Vulnerability Database NVD GitHub Advisory
Auto-generated summary
Assembled by SecPulse from the source data (CVSS, CWE, affected versions) using templates — no AI involved. Check the original description and references below for exact details.
A vulnerability tracked as CVE-2026-33229 has been found in XWiki Platform.
Successful exploitation can lead to full system takeover. CVSS score: 9.8/10.
What to do: upgrade XWiki Platform to 17.4.8 or later.
If unsure, ask your IT team or search "XWiki Platform CVE-2026-33229" on the vendor's site.
CVE-2026-33229 (XWiki Platform) — CWE-862 / CVSS v3 9.8
Attack vector: remote (network-reachable) / unauthenticated / no user interaction
Patched: 17.4.8 — apply immediately
Plan: 1) Audit SBOM/dependencies, 2) Stage→prod upgrade, 3) Add WAF/proxy monitoring on affected endpoints, 4) Hunt IOCs in logs.
Refs: see the GHSA / vendor advisory / patched release linked on this page.
A vulnerability (CWE-862) exists in XWiki Platform.
Check the vendor advisory for the affected versions of XWiki Platform.
Severity: Critical (CVSS 9.8/10). Successful exploitation can lead to full system takeover.
Update to 17.4.8.
Until the patch is applied: disable the affected feature, apply WAF rules, or restrict access via network ACLs.
Search webserver/proxy logs for unusual request patterns matching this CVE's known IOCs. Audit SBOM/dependencies to find affected services.
Response actions
Concrete steps and command examples for SOC/SRE teams to execute in order
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1Identify exposure identify
Audit SBOM/dependencies for affected components.資産台帳・SBOM・依存マニフェストで XWiki Platform を使っているサービスとバージョンを洗い出す。
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2Apply patch patch
Upgrade XWiki Platform to 17.4.8ステージング環境で 17.4.8 に上げて回帰テスト → 本番反映。回帰テストはアプリの主要ハッピーパスを含めること。
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3Post-deployment verification verify
Confirm patched version is live in productionパッチ適用後、ステージングで PoC または同等の悪用パターンを再現して脆弱性が閉じたことを確認。本番ではアクセスログ・WAF でアラート再発が無いか継続監視。
References
- advisory github.com
- advisory github.com
- advisory nvd.nist.gov
- patch github.com
- web jira.xwiki.org
- web jira.xwiki.org