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Fencer Intel
low 3.5

CVE-2025-49583 json

XWiki provides no warning when granting XWiki.Notifications.Code.NotificationEmailRendererClass admin right

published last yr. modified 4mo ago also EUVD-2025-18298 , GHSA-ff6v-w58f-v97w

cvss
3.5
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
0.3%
EPSS 0.3% chance of exploitation in 30 days, percentile 20%
public exploits
0
none known

Summary

XWiki is a generic wiki platform. When a user without script right creates a document with an `XWiki.Notifications.Code.NotificationEmailRendererClass` object, and later an admin edits and saves that document, the email templates in this object will be used for notifications. No malicious code can be executed, though, as while these templates allow Velocity code, the existing generic analyzer already warns admins before editing Velocity code. The main impact would thus be to send spam, e.g., with phishing links to other users or to hide notifications about other attacks. Note that warnings before editing documents with dangerous properties have only been introduced in XWiki 15.9, before that version, this was a known issue and the advice was simply to be careful. This has been patched in XWiki 16.10.2, 16.4.7 and 15.10.16 by adding an analysis for the respective XClass properties.

Patch / fix

  • maven org.xwiki.platform:xwiki-platform-notifications-notifiers-default 15.10.16, 16.4.7, 16.10.2
  • org.xwiki.platform xwiki-platform-notifications-notifiers-default 15.10.16, 16.4.7, 16.10.2
  • xwiki xwiki 15.10.16, 16.4.7, 16.10.2

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CISA SSVC

Exploitation
Proof of concept is public
Automatable
no
Technical impact
partial
Assessed
last yr.

Exploit prediction

0.28% chance of exploitation in the next 30 days, higher than 20% of all scored CVEs (FIRST EPSS, 2026-11-09).

Exploits and checks

  • jira.xwiki.org https://jira.xwiki.org/browse/XWIKI-22471 referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
CNA 4.0 5.1 CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:N/VI:N/VA:N/SC:N/SI:L/SA:N
CNA 4.0 5.1 CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:N/VI:N/VA:N/SC:N/SI:L/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
NVD 3.1 3.5 CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:L/A:N

Affected packages

ecosystem package affected fixed in
maven org.xwiki.platform:xwiki-platform-notifications-notifiers-default
<15.10.16
>=16.0.0-rc-1, <16.4.7
>=16.5.0-rc-1, <16.10.2
15.10.16
16.4.7
16.10.2

Affected products

  • xwiki xwiki-platform

Classification

Weakness
  • CWE-270 Privilege Context Switching Error
  • CWE-357 Insufficient UI Warning of Dangerous Operations

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.