HOMEVULNERABILITIESCVE-2026-29962
HIGH

CVE-2026-29962

Published: May 18, 2026· Updated: May 19, 2026

7.5
CVSS v3.1
EPSS:0.04%probability of exploitation in 30 daysPercentile:12.5th

Official 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.

NVD Source

Technical Analysis

CVE-2026-29962 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

A successful exploit results in complete confidentiality breach (data exposure), with a CVSS base score of 7.5.

CVSS v3.1 Vector Breakdown

Exploitability
Attack VectorNetwork
Attack ComplexityLow
Privileges Req.None
User InteractionNone
ScopeUnchanged
Impact
ConfidentialityHigh
IntegrityNone
AvailabilityNone
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Affected Vendors & Products

hsclabs1 product
mailinspector
Source: NVD CPE · 1 total CPE entries

Exploit & PoC Resources

NO KNOWN EXPLOITNo public exploit confirmed at this time
Exploit-DB
Offensive Security exploit database
GitHub PoC Search
Community PoC repositories
Rapid7 / Metasploit
Metasploit module search
PacketStorm
Security advisories & exploits
NVD Detail
Official NIST entry
MITRE CVE
CVE Program entry
External links open in a new tab. Always verify in a controlled environment before use.

Official Patches & Advisories

ADVISORYhttps://github.com/sql3t0/cve-disclosures
ADVISORYhttps://github.com/sql3t0/cve-disclosures/blob/main/01_-_CVE-2026-29962_LFI%2BPath_Traversal.md

All References (3)

→
https://github.com/sql3t0/cve-disclosuresThird Party Advisory
→
https://github.com/sql3t0/cve-disclosures/blob/main/01_-_CVE-2026-29962_LFI%2BPath_Traversal.mdThird Party Advisory
→
https://hsclabs.com/pt-br/mailinspectorProduct

Quick Facts

CVE IDCVE-2026-29962
CVSS Score7.5 / 10
SeverityHIGH
CISA KEVNo
EPSS (30d)0.04%
Affected1 vendor
PublishedMay 18, 2026

Recommended Actions

  • →Apply vendor patches immediately
  • →Monitor CVE-2026-29962 in threat intel feeds
  • →Review IDS/IPS signatures for exploitation attempts
Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWATCH.COM. CVE data is provided under the NVD usage policy.
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