CVE-2026-103047

XSS through i18n message in CentralAuth

MEDIUM
6.1
CVSS Score
Published: September 29, 2026 at 10:59 PM UTC
Updated: September 30, 2026 at 09:17 PM UTC
1 product affected across 1 vendorCentralAuth

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Severity
MEDIUM6.1
Exploit prediction
EPSS 0.2%
SSVC
No known exploit

Description

Improper neutralization of input during web page generation ('cross-site scripting') vulnerability in The Wikimedia Foundation Mediawiki - CentralAuth extension allows Stored XSS. This issue affects Mediawiki - CentralAuth extension: before 1.46.1, 1.45.5, 1.43.10.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

v < 1.46.1, 1.45.5, 1.43.10
Affected range stops below 1.46.1, 1.45.5, 1.43.10, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

Patch and advisory references

References (2)

Issue Tracking
Source: cverecord
https://phabricator.wikimedia.org/T244682
Mitigation
Source: cverecord
https://gerrit.wikimedia.org/r/c/1309285

SSVC — Action Prioritization

SSVCNo known exploitNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

6.1MEDIUMCISA-ADP
Attack Vector
NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
REQUIRED
Scope
CHANGED
Confidentiality
LOW
Integrity
LOW
Availability
NONE
Vector?

Quick Info

StatusAWAITING ANALYSIS
CWE
CWE-79

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