CVE-2026-29965

MEDIUM

HSC MailInspector 5.3.3-7 - Cross-Site Scripting in WarningUrlPage Endpoint

Title source: llm
STIX 2.1

Exploitation Summary

EIP tracks 1 public exploit for CVE-2026-29965. PoCs published by sql3t0.

AI-analyzed exploit summary This repository contains a technical writeup detailing a Cross-Site Scripting (XSS) vulnerability in MailInspector v5.3.3-7, specifically in the `/mailinspector/police/WarningUrlPage.php` endpoint. The writeup includes CWE, CVSS, and impact analysis but lacks exploit code.

Description

HSC MailInspector 5.3.3-7 is vulnerable to Cross Site Scripting (XSS) in the /police/WarningUrlPage.php endpoint due to improper neutralization of user-supplied input that uses alternate or obfuscated JavaScript syntax.

Exploits (1)

github WRITEUP
by sql3t0 · poc
https://github.com/sql3t0/cve-disclosures/tree/main/04_-_CVE-2026-29965_XSS.md

This repository contains a technical writeup detailing a Cross-Site Scripting (XSS) vulnerability in MailInspector v5.3.3-7, specifically in the `/mailinspector/police/WarningUrlPage.php` endpoint. The writeup includes CWE, CVSS, and impact analysis but lacks exploit code.

Classification
Writeup 90%
Attack Type
Xss
Complexity
Trivial
Reliability
Theoretical
Target: MailInspector v5.3.3-7
No auth needed
Prerequisites: User interaction required to trigger the XSS payload
devstral-2 · analyzed May 18, 2026 Full analysis →

References (3)

Core 3

Scores

CVSS v3 6.1
EPSS 0.0003
EPSS Percentile 9.6%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

CISA SSVC

Vulnrichment
Exploitation none
Automatable no
Technical Impact partial

Details

CWE
CWE-79
Status published
Products (1)
hsclabs/mailinspector 5.3.3-7
Published May 18, 2026
Tracked Since May 18, 2026