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Fencer Intel
medium 5.9

CVE-2026-48047 json

XWiki Platform vulnerable to potential arbitrary file writing using path traversal from (subwiki) admin

published 5mo ago modified 19d ago also EUVD-2026-54714 , GHSA-vgwr-23fq-pr7g

cvss
5.9
version 4.0, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.7%
EPSS 0.7% chance of exploitation in 30 days, percentile 51%
public exploits
0
none known

Summary

XWiki Platform WebJars API is a package for XWiki, a generic wiki platform. Starting with version 9.6-rc-1 and prior to versions 16.10.17, 17.4.9, and 17.10.3, a potential path traversal vulnerability allow an attacker who manages to get a malicious WebJar extension installed on the wiki to write arbitrary files. While the consequences could be severe like overriding configuration files and setting the superadmin password, the attack first requires that the attacker already has admin access to at least a subwiki to be able to install a malicious extension. Further, the attacker needs to publish a malicious extension in an extension repository that is configured in the instance. This vulnerability has been patched in XWiki 16.10.17, 17.4.9, 17.10.3, and 18.0.0RC1. XWiki is not aware of any workarounds except for being careful whom developers grant script and admin rights to.

Patch / fix

  • maven org.xwiki.platform:xwiki-platform-webjars-api 16.10.17, 17.4.9, 17.10.3
  • org.xwiki.platform xwiki-platform-webjars-api 16.10.17, 17.4.9, 17.10.3
  • xwiki xwiki 16.10.17, 17.4.9, 17.10.3

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CISA SSVC

Exploitation
Proof of concept is public
Automatable
no
Technical impact
partial
Assessed
3mo ago

Exploit prediction

0.65% chance of exploitation in the next 30 days, higher than 51% of all scored CVEs (FIRST EPSS, 2026-11-11).

Exploits and checks

  • jira.xwiki.org https://jira.xwiki.org/browse/XWIKI-23902 referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
CNA 4.0 5.9 CVSS:4.0/AV:N/AC:L/AT:P/PR:H/UI:N/VC:L/VI:H/VA:L/SC:N/SI:N/SA:N
CNA 4.0 5.9 CVSS:4.0/AV:N/AC:L/AT:P/PR:H/UI:N/VC:L/VI:H/VA:L/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Affected packages

ecosystem package affected fixed in
maven org.xwiki.platform:xwiki-platform-webjars-api
>=9.6-rc-1, <16.10.17
>=17.0.0-rc-1, <17.4.9
>=17.5.0-rc-1, <17.10.3
16.10.17
17.4.9
17.10.3

Affected products

  • xwiki xwiki-platform

Classification

Weakness
  • CWE-24 Path Traversal: '../filedir'

References

Sources

Fencer Intel 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.

CPEs and fixed versions use Anchore's correction of NVD's data: Added CPE configurations because not yet analyzed by NVD.