What’s Vulnerable › Vulnerabilities

CVE-2023-26470: In XWiki Platform, saving a document with a large object number leads to persistent OOM errors

• Severity: high (CVSS 7.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.9% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2023-03-02 · updated 2026-06-17
• Weakness: CWE-400

Description

XWiki Platform is a generic wiki platform offering runtime services for applications built on top of it. It's possible to make the farm unusable by adding an object to a page with a huge number (e.g. 67108863). Most of the time this will fill the memory allocated to XWiki and make it unusable every time this document is manipulated. This issue has been patched in XWiki 14.0-rc-1.

Affected products

• xwiki-platform: before 14.0 — fixed in 14.0

How to fix

Upgrade to a fixed version: xwiki-platform 14.0. Check the vendor advisory for mitigations.

References

• https://github.com/xwiki/xwiki-platform/commit/04e5a89d2879b160cdfaea846024d3d9c1a525e6
• https://github.com/xwiki/xwiki-platform/commit/db3d1c62fc5fb59fefcda3b86065d2d362f55164
• https://github.com/xwiki/xwiki-platform/commit/fdfce062642b0ac062da5cda033d25482f4600fa
• https://github.com/xwiki/xwiki-platform/security/advisories/GHSA-92wp-r7hm-42g7
• https://jira.xwiki.org/browse/XWIKI-19223
• https://github.com/xwiki/xwiki-platform/commit/04e5a89d2879b160cdfaea846024d3d9c1a525e6
• https://github.com/xwiki/xwiki-platform/commit/db3d1c62fc5fb59fefcda3b86065d2d362f55164
• https://github.com/xwiki/xwiki-platform/commit/fdfce062642b0ac062da5cda033d25482f4600fa
• https://github.com/xwiki/xwiki-platform/security/advisories/GHSA-92wp-r7hm-42g7
• https://jira.xwiki.org/browse/XWIKI-19223

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