EIP-2026-104173

PRE-CVE

Atlassian Confluence 3.4.x - Error Page Cross-Site Scripting

Title source: legacy
STIX 2.1

Exploitation Summary

EIP tracks 1 public exploit for EIP-2026-104173. PoCs published by D. Niedermaier.

AI-analyzed exploit summary The exploit demonstrates a cross-site scripting (XSS) vulnerability in Atlassian Confluence by injecting an IFRAME with JavaScript code via a malformed URL. This allows arbitrary script execution in the context of the affected site.

Description

Atlassian Confluence 3.4.x - Error Page Cross-Site Scripting

Exploits (1)

exploitdb WORKING POC VERIFIED
by D. Niedermaier · textwebappsmultiple
https://www.exploit-db.com/exploits/37791

The exploit demonstrates a cross-site scripting (XSS) vulnerability in Atlassian Confluence by injecting an IFRAME with JavaScript code via a malformed URL. This allows arbitrary script execution in the context of the affected site.

Classification
Working Poc 90%
Attack Type
Xss
Complexity
Trivial
Reliability
Reliable
Target: Atlassian Confluence versions prior to 4.1.9
No auth needed
Prerequisites: Access to a vulnerable Atlassian Confluence instance
MITRE ATT&CK
devstral-2 · analyzed Feb 18, 2026 Full analysis →

Details

Status pre_cve
Tracked Since Feb 18, 2026