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VulnerabilityPublished

CVE-2025-41060: appRain CMF · XSS or 'Cross-site Scripting'

Affects appRain CMFSource CVE Database V5

0

Not known to be exploited · CVSS 5.1 Medium.

Data as of 26 Oct 2026, 14:05 UTC

CVSS 4.0 base score
5.1Medium
How severe the flaw is on the 0–10 CVSS scale.
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:P/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 4 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 26 Oct 2026.

What to do

Affected software

ProductAffectedFixed in
appRain appRain CMFAffected
  • =4.0.5
Fixed in–

AI-suggested

  1. Immediate mitigation should include restricting access to the affected endpoint (/apprain/developer/addons/update/tree) to trusted administrators only, minimizing the attack surface.
  2. Implement strict input validation and output encoding on the 'data[Addon][layouts]' and 'data[Addon][layouts_except]' parameters to neutralize malicious scripts before storage and rendering.
  3. Employ Content Security Policy (CSP) headers to limit the execution of unauthorized scripts in browsers.
  4. Monitor logs for suspicious activities related to these parameters and unusual user behavior.
  5. Conduct thorough code reviews and security testing on all user input handling in the appRain CMF environment.
  6. 7. Educate users and administrators about the risks of XSS and encourage the use of multi-factor authentication to reduce the risk of account compromise. 8. Stay updated with vendor advisories for patches or updates addressing this vulnerability and apply them promptly once released.

Description

A vulnerability has been discovered in appRain CMF version 4.0.5, consisting of a stored authenticated XSS due to a lack of proper validation of user input, through the 'data[Addon][layouts]' and 'data[Addon][layouts_except]' parameters in /apprain/developer/addons/update/tree.

References

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