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Fencer Vulns
medium 5.7

CVE-2023-26470 json

In XWiki Platform, saving a document with a large object number leads to persistent OOM errors

published 2023-03-02 3 y ago modified 2026-06-17 4 mo ago also GHSA-92wp-r7hm-42g7 , EUVD-2023-0954

cvss
5.7
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.9%
EPSS 0.9% chance of exploitation in 30 days, percentile 58%
public exploits
0
none known

Summary

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.

Patch / fix

  • maven org.xwiki.platform:xwiki-platform-oldcore 14.0-rc-1
  • xwiki xwiki 14.0

CISA SSVC

Exploitation
none
Automatable
no
Technical impact
partial
Assessed
20 mo ago

Exploit prediction

0.85% chance of exploitation in the next 30 days, higher than 58% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • jira.xwiki.org https://jira.xwiki.org/browse/XWIKI-19223 referenced PoC, tagged "exploit" by a source, unverified
  • github.com https://github.com/xwiki/xwiki-platform/security/advisories/GHSA-92wp-r7hm-42g7 referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
CNA 3.1 5.7 CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:N/A:H
NVD 3.1 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
GitHub 3.1 5.7 CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:N/A:H

Affected packages

ecosystem package affected fixed in
maven org.xwiki.platform:xwiki-platform-oldcore
<14.0-rc-1
14.0-rc-1

Affected products

  • xwiki xwiki-platform

Classification

Weakness
  • CWE-400 Uncontrolled Resource Consumption
  • CWE-787 Out-of-bounds Write

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.