EIP-2026-106256

PRE-CVE

CSSTidy 1.3 - 'css_optimiser.php' Cross-Site Scripting

Title source: legacy
STIX 2.1

Exploitation Summary

EIP tracks 1 public exploit for EIP-2026-106256. PoCs published by John Leitch.

AI-analyzed exploit summary This exploit demonstrates a cross-site scripting (XSS) vulnerability in CSSTidy and ImpressCMS due to improper input sanitization. The provided URL injects a script tag to execute arbitrary JavaScript in the context of the affected site.

Description

CSSTidy 1.3 - 'css_optimiser.php' Cross-Site Scripting

Exploits (1)

exploitdb WORKING POC VERIFIED
by John Leitch · textwebappsphp
https://www.exploit-db.com/exploits/34296

This exploit demonstrates a cross-site scripting (XSS) vulnerability in CSSTidy and ImpressCMS due to improper input sanitization. The provided URL injects a script tag to execute arbitrary JavaScript in the context of the affected site.

Classification
Working Poc 90%
Attack Type
Xss
Complexity
Trivial
Reliability
Reliable
Target: CSSTidy 1.3 and ImpressCMS 1.2.1
No auth needed
Prerequisites: Access to the vulnerable URL endpoint
MITRE ATT&CK
devstral-2 · analyzed Feb 16, 2026 Full analysis →

Details

Status pre_cve
Tracked Since Feb 18, 2026