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CVE-2025-48007VulnerabilityPublished

CVE-2025-48007: Hallo Welt! BlueSpice · Improper Encoding or Escaping of Output

Affects Hallo Welt! BlueSpiceSource CVE Database V5

0

Not known to be exploited · CVSS 5.9 Medium.

Data as of 25 Oct 2026, 19:02 UTC

CVSS 4.0 base score
5.9Medium
How severe the flaw is on the 0–10 CVSS scale.
EPSS
0.1% chance of exploitation in 30 days – higher than 9% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:P/VC:H/VI:L/VA:N/SC:N/SI:N/SA:N

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 19 Sep 2025

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponised: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 2026-10-25.

What to do

Affected software

ProductAffectedFixed in
Hallo Welt! GmbH BlueSpiceAffected
  • =5
Fixed in–

AI-suggested

European organizations should immediately assess their use of BlueSpice, particularly versions 5 through 5.1.1, and plan for an upgrade or patch deployment once available from Hallo Welt! GmbH. In the absence of an official patch, organizations should implement strict input validation and output encoding on any user-generated content within BlueSpice, especially in the BlueSpiceAvatars extension. Employ Content Security Policy (CSP) headers to restrict the execution of unauthorized scripts and reduce the impact of XSS attacks. Additionally, user awareness training should be enhanced to mitigate social engineering risks that could lead to user interaction with malicious payloads. Monitoring web application logs for unusual activity and implementing Web Application Firewalls (WAF) with rules targeting XSS patterns can provide temporary protection. Finally, enforce strong authentication mechanisms and session management controls to reduce the risk of session hijacking.

Description

Improper Encoding or Escaping of Output vulnerability in Hallo Welt! GmbH BlueSpice (Extension:BlueSpiceAvatars) allows Cross-Site Scripting (XSS). This issue affects BlueSpice: from 5 through 5.1.1.

References

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