EIP-2026-100018

PRE-CVE

Plesk 10.4.4/11.0.9 - SSO XML External Entity / Cross-Site Scripting Injection

Title source: legacy
STIX 2.1

Exploitation Summary

EIP tracks 1 public exploit for EIP-2026-100018. PoCs published by BLacK ZeRo.

AI-analyzed exploit summary This PHP script exploits an XXE (XML External Entity) injection vulnerability in Plesk SSO (Single Sign-On) to read arbitrary files or execute commands via the 'expect://' wrapper. It crafts a malicious SAML request with an embedded XXE payload and sends it to the target Plesk instance.

Description

Plesk 10.4.4/11.0.9 - SSO XML External Entity / Cross-Site Scripting Injection

Exploits (1)

exploitdb WORKING POC
by BLacK ZeRo · phpwebappsaix
https://www.exploit-db.com/exploits/33736

This PHP script exploits an XXE (XML External Entity) injection vulnerability in Plesk SSO (Single Sign-On) to read arbitrary files or execute commands via the 'expect://' wrapper. It crafts a malicious SAML request with an embedded XXE payload and sends it to the target Plesk instance.

Classification
Working Poc 95%
Attack Type
Info Leak
Complexity
Moderate
Reliability
Reliable
Target: Plesk 11.0.9, 10.4.4
No auth needed
Prerequisites: Target Plesk instance with vulnerable SSO endpoint · Network access to port 8443
devstral-2 · analyzed Feb 18, 2026 Full analysis →

Details

Status pre_cve
Tracked Since Feb 18, 2026