CVE-2026-29962

HIGH

HSC MailInspector 5.3.3-7 - Path Traversal

Title source: llm
STIX 2.1

Exploitation Summary

EIP tracks 1 public exploit for CVE-2026-29962. PoCs published by sql3t0.

AI-analyzed exploit summary This repository contains a technical writeup detailing CVE-2026-29962, a Local File Inclusion (LFI) and Path Traversal vulnerability in MailInspector v5.3.3-7. The vulnerability allows attackers to read arbitrary files via improper path validation in `/mailinspector/vendor/phpunit/phpunit.php`.

Description

HSC MailInspector v5.3.3-7 contains a Local File Inclusion (LFI) vulnerability caused by improper control of user-supplied file paths. The endpoint /vendor/phpunit/phpunit.php processes user-controlled parameters that directly affect file access operations without adequate validation, sanitization, or path restriction. This allows a remote attacker to exploit Path Traversal techniques to read arbitrary files from the underlying operating system and application directories, leading to sensitive information disclosure.

Exploits (1)

github WRITEUP
by sql3t0 · poc
https://github.com/sql3t0/cve-disclosures/tree/main/01_-_CVE-2026-29962_LFI+Path_Traversal.md

This repository contains a technical writeup detailing CVE-2026-29962, a Local File Inclusion (LFI) and Path Traversal vulnerability in MailInspector v5.3.3-7. The vulnerability allows attackers to read arbitrary files via improper path validation in `/mailinspector/vendor/phpunit/phpunit.php`.

Classification
Writeup 90%
Attack Type
Info Leak
Complexity
Trivial
Reliability
Reliable
Target: MailInspector v5.3.3-7
No auth needed
Prerequisites: access to the vulnerable endpoint
devstral-2 · analyzed May 18, 2026 Full analysis →

References (3)

Core 3

Scores

CVSS v3 7.5
EPSS 0.0005
EPSS Percentile 17.5%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

CISA SSVC

Vulnrichment
Exploitation none
Automatable yes
Technical Impact partial

Details

CWE
CWE-73
Status published
Products (1)
hsclabs/mailinspector 5.3.3-7
Published May 18, 2026
Tracked Since May 18, 2026