CVE-2020-35437

MEDIUM

Subrion CMS 4.2.1 - Cross-Site Scripting via Avatar Path Parameter

Title source: llm
STIX 2.1

Exploitation Summary

EIP tracks 1 public exploit for CVE-2020-35437. PoCs published by icekam.

AI-analyzed exploit summary This exploit demonstrates a stored XSS vulnerability in Subrion CMS 4.2.1 via the 'avatar[path]' parameter in the profile update functionality. The payload is injected into the POST request to /_core/profile/, triggering JavaScript execution when rendered.

Description

Subrion CMS 4.2.1 is affected by: Cross Site Scripting (XSS) through the avatar[path] parameter in a POST request to the /_core/profile/ URI.

Exploits (1)

exploitdb WORKING POC
by icekam · textwebappsphp
https://www.exploit-db.com/exploits/49346

This exploit demonstrates a stored XSS vulnerability in Subrion CMS 4.2.1 via the 'avatar[path]' parameter in the profile update functionality. The payload is injected into the POST request to /_core/profile/, triggering JavaScript execution when rendered.

Classification
Working Poc 90%
Attack Type
Xss
Complexity
Trivial
Reliability
Reliable
Target: Subrion CMS 4.2.1
Auth required
Prerequisites: Valid user session · Access to the profile update endpoint
MITRE ATT&CK
devstral-2 · analyzed Feb 16, 2026 Full analysis →

References (2)

Core 2
Core References
Exploit, Third Party Advisory x_refsource_misc
https://github.com/intelliants/subrion/issues/880
Exploit, Third Party Advisory, VDB Entry x_refsource_misc
http://packetstormsecurity.com/files/160783/Subrion-CMS-4.2.1-Cross-Site-Scripting.html

Scores

CVSS v3 6.1
EPSS 0.0303
EPSS Percentile 85.8%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

Details

CWE
CWE-79
Status published
Products (1)
intelliants/subrion_cms 4.2.1
Published Dec 26, 2020
Tracked Since Feb 18, 2026