CVE-2025-41059: appRain CMF · XSS or 'Cross-site Scripting'
Affects appRain CMFSource CVE Database V5
Not known to be exploited · CVSS 5.1 Medium.
Data as of 26 Oct 2026, 10:12 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:P/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 26 Oct 2026.
What to do
Affected software
| Product | Affected | Fixed in |
|---|---|---|
| appRain appRain CMF | Affected
| Fixed in– |
AI-suggested
- Immediate mitigation should focus on restricting access to the affected endpoint (/apprain/developer/addons/update/tablesorter) to trusted administrators only, minimizing the number of users with privileges to modify addon layouts.
- Implement strict input validation and sanitization at the application level for the 'data[Addon][layouts]' and 'data[Addon][layouts_except]' parameters, using context-aware encoding to neutralize any script content.
- Employ Web Application Firewalls (WAFs) with custom rules to detect and block suspicious payloads targeting these parameters.
- Monitor logs for unusual activity related to addon updates or unexpected script injections.
- Until an official patch is released, consider disabling or limiting the use of the vulnerable functionality if feasible.
- Educate users and administrators about phishing and social engineering risks that could lead to credential compromise, as authenticated access is required for exploitation.
- Plan for rapid deployment of patches once available and conduct thorough testing to ensure the vulnerability is fully remediated.
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/tablesorter.