Potential XSS on user preferences page

published 2023-10-30 3 y ago modified 2026-06-17 4 mo ago also EUVD-2023-46883

cvss: 2.1; version 3.1, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 0.4%; EPSS 0.4% chance of exploitation in 30 days, percentile 34%
public exploits: 0; none known

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.

Patch / fix

fixed in 1

hallowelt bluespice 3.2.10.1, 4.3.3

CISA SSVC

Exploitation: none
Automatable: no
Technical impact: partial
Assessed: 2 y ago (2024-09-06)

Exploit prediction

0.40% chance of exploitation in the next 30 days, higher than 34% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

en.wiki.bluespice.com https://en.wiki.bluespice.com/wiki/Security:Security_Advisories/BSSA-2023-02 referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by	version	score	vector
CNA	3.1	2.1	CVSS:3.1/AV:A/AC:L/PR:H/UI:R/S:U/C:L/I:N/A:N
NVD	3.1	5.4	CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N

Affected products

Hallo Welt! GmbH BlueSpice

Classification

Weakness

CWE-20 Improper Input Validation
CWE-79 Improper Neutralization of Input During Web Page Generation

References

en.wiki.bluespice.com /wiki/Security:Security_Advisories/BSSA-2023-02
exploit, third-party-advisory

Sources

CVE List CVE-2023-42431
NVD CVE-2023-42431

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.

Summary