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Fencer Vulns
critical 9.1

CVE-2023-34464 json

XWiki vulnerable to stored cross-site scripting via any wiki document and the displaycontent/rendercontent template

published 2023-06-20 3 y ago modified 2026-06-17 4 mo ago also GHSA-fp7h-f9f5-x4q7 , EUVD-2023-1787

cvss
9.1
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.7%
EPSS 0.7% chance of exploitation in 30 days, percentile 53%
public exploits
0
none known

Summary

XWiki Platform is a generic wiki platform offering runtime services for applications built on top of it. Starting in version 2.2.1 until versions 14.4.8, 14.10.5, and 15.1RC1 of org.xwiki.platform:xwiki-platform-web and any version prior to 14.4.8, 14.10.5, and 15.1.RC1 of org.xwiki.platform:xwiki-platform-web-templates, any user who can edit a document in a wiki like the user profile can create a stored cross-site scripting attack. The attack occurs by putting plain HTML code into that document and then tricking another user to visit that document with the `displaycontent` or `rendercontent` template and plain output syntax. If a user with programming rights is tricked into visiting such a URL, arbitrary actions be performed with this user's rights, impacting the confidentiality, integrity, and availability of the whole XWiki installation. This has been patched in XWiki 14.4.8, 14.10.5 and 15.1RC1 by setting the content type of the response to plain text when the output syntax is not an HTML syntax.

Patch / fix

  • maven org.xwiki.platform:xwiki-platform-web 14.4.8
  • maven org.xwiki.platform:xwiki-platform-web-templates 14.4.8, 14.10.5, 15.1-rc-1
  • xwiki xwiki 14.4.8, 14.10.5

CISA SSVC

Exploitation
none
Automatable
no
Technical impact
total
Assessed
23 mo ago

Exploit prediction

0.71% chance of exploitation in the next 30 days, higher than 53% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • jira.xwiki.org https://jira.xwiki.org/browse/XWIKI-20290 referenced PoC, tagged "exploit" by a source, unverified
  • github.com https://github.com/xwiki/xwiki-platform/security/advisories/GHSA-fp7h-f9f5-x4q7 referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
CNA 3.1 9.1 CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H
NVD 3.1 5.4 CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
GitHub 3.1 9.0 CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H

Affected packages

ecosystem package affected fixed in
maven org.xwiki.platform:xwiki-platform-web
>=2.2.1, <14.4.8
14.4.8
maven org.xwiki.platform:xwiki-platform-web-templates
<14.4.8
>=14.5, <14.10.5
>=15.0-rc-1, <15.1-rc-1
14.4.8
14.10.5
15.1-rc-1

Affected products

  • xwiki xwiki-platform

Classification

Weakness
  • CWE-79 Improper Neutralization of Input During Web Page Generation

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.