CVE-2021-3298

MEDIUM

Collabtive 3.1 - Authenticated Stored Cross-Site Scripting via Profile Address Field

Title source: llm
STIX 2.1

Exploitation Summary

EIP tracks 1 public exploit for CVE-2021-3298. PoCs published by Deha Berkin Bir.

AI-analyzed exploit summary This exploit demonstrates a persistent XSS vulnerability in Collabtive 3.1 via the 'address' field in the user profile edit page. The payload is injected into the 'address1' parameter and executed when the profile is viewed or edited.

Description

Collabtive 3.1 allows XSS when an authenticated user enters an XSS payload into the address section of the profile edit page, aka the manageuser.php?action=edit address1 parameter.

Exploits (1)

exploitdb WORKING POC
by Deha Berkin Bir · textwebappsphp
https://www.exploit-db.com/exploits/49468

This exploit demonstrates a persistent XSS vulnerability in Collabtive 3.1 via the 'address' field in the user profile edit page. The payload is injected into the 'address1' parameter and executed when the profile is viewed or edited.

Classification
Working Poc 90%
Attack Type
Xss
Complexity
Trivial
Reliability
Reliable
Target: Collabtive 3.1
Auth required
Prerequisites: Valid user credentials · Access to the profile edit page
devstral-2 · analyzed Feb 16, 2026 Full analysis →

References (2)

Core 2
Core References
Vendor Advisory x_refsource_misc
https://collabtive.o-dyn.de/forum/viewforum.php?f=6
Exploit, Third Party Advisory, VDB Entry x_refsource_misc
https://www.exploit-db.com/exploits/49468

Scores

CVSS v3 5.4
EPSS 0.0214
EPSS Percentile 79.7%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N

Details

CWE
CWE-79
Status published
Products (1)
o-dyn/collabtive 3.1
Published Jan 29, 2021
Tracked Since Feb 18, 2026