CVE-2023-42431: Potential XSS on user preferences page

Severity: medium (CVSS 5.4 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.3% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2023-10-30 · updated 2026-06-17
Weakness: CWE-20

Description

Cross-site Scripting (XSS) vulnerability in BlueSpiceAvatars extension of BlueSpice allows logged in user to inject arbitrary HTML into the profile image dialog on Special:Preferences. This only applies to the genuine user context.

Affected products

Hallo Welt! GmbH BlueSpice: from 3.0 before 3.2.10.1; from 4.0 before 4.3.3 — fixed in 3.2.10.1, 4.3.3

How to fix

Upgrade to a fixed version: Hallo Welt! GmbH BlueSpice 3.2.10.1, 4.3.3. Check the vendor advisory for mitigations.

References

https://en.wiki.bluespice.com/wiki/Security:Security_Advisories/BSSA-2023-02
https://en.wiki.bluespice.com/wiki/Security:Security_Advisories/BSSA-2023-02

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