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VulnerabilityPublished

CVE-2025-41059: 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, 10:12 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 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.
  2. 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.
  3. Employ Web Application Firewalls (WAFs) with custom rules to detect and block suspicious payloads targeting these parameters.
  4. Monitor logs for unusual activity related to addon updates or unexpected script injections.
  5. Until an official patch is released, consider disabling or limiting the use of the vulnerable functionality if feasible.
  6. Educate users and administrators about phishing and social engineering risks that could lead to credential compromise, as authenticated access is required for exploitation.
  7. 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.

References

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