EIP-2026-104051

PRE-CVE

PostMaster 3.16/3.17 Proxy Service - Cross-Site Scripting

Title source: legacy
STIX 2.1

Exploitation Summary

EIP tracks 1 public exploit for EIP-2026-104051. PoCs published by Ziv Kamir.

AI-analyzed exploit summary The provided text describes a cross-site scripting (XSS) vulnerability in PostMaster's proxy service, where insufficient sanitization of user-supplied data allows embedded HTML and script code to be rendered in an error page.

Description

PostMaster 3.16/3.17 Proxy Service - Cross-Site Scripting

Exploits (1)

exploitdb WRITEUP VERIFIED
by Ziv Kamir · textremotemultiple
https://www.exploit-db.com/exploits/23385

The provided text describes a cross-site scripting (XSS) vulnerability in PostMaster's proxy service, where insufficient sanitization of user-supplied data allows embedded HTML and script code to be rendered in an error page.

Classification
Writeup 90%
Attack Type
Xss
Complexity
Trivial
Reliability
Theoretical
Target: PostMaster (version unspecified)
No auth needed
Prerequisites: A user must follow a malicious link
MITRE ATT&CK
devstral-2 · analyzed Feb 16, 2026 Full analysis →

Details

Status pre_cve
Tracked Since Feb 18, 2026