CVE-2025-41062: appRain CMF · XSS or 'Cross-site Scripting'
Affects appRain CMFSource CVE Database V5
Not known to be exploited · CVSS 4.8 Medium.
Data as of 25 Oct 2026, 19:02 UTC
- EPSS
- 0.1% chance of exploitation in 30 days – higher than 7% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:A/VC:N/VI:N/VA:N/SC:L/SI:L/SA:NExploitation evidence
Disclosed: evidence found.
CVE published 4 Sep 2025
Detectable: no evidence on record.
No public nuclei template indexed
Weaponised: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by 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
| Product | Affected | Fixed in |
|---|---|---|
| appRain appRain CMF | Affected
| Fixed in– |
AI-suggested
To mitigate this vulnerability, European organizations should first verify if they are running appRain CMF version 4.0.5 and restrict access to the /apprain/developer/addons endpoint to trusted users only. Web Application Firewalls (WAFs) can be configured with custom rules to detect and block malicious payloads targeting this parameter. Additionally, enforcing strong authentication mechanisms and monitoring user activities for anomalous behavior can reduce the risk of credential compromise and exploitation. Organizations should also educate users about the risks of phishing and credential theft to prevent attackers from gaining authenticated access. Regular security assessments and penetration testing focused on XSS vulnerabilities in the appRain CMF environment are recommended. Once a vendor patch is released, prompt application of the update is critical. Finally, implementing Content Security Policy (CSP) headers can help mitigate the impact of XSS by restricting the execution of unauthorized scripts in browsers.
Description
A vulnerability has been discovered in version 4.0.5 of appRain CMF, consisting of an authenticated reflected XSS due to a lack of proper validation of user input, through the 'page' parameter in /apprain/developer/addons.