CVE-2026-29963

Name: CVE-2026-29963
Creator: NVD / NIST
Published: 2026-05-18T18:17:21.517+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.5/10EPSS 0.60%

Last modified Jun 17, 2026

CVE-2026-29963 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. HSC MailInspector 5.3.3-7 has a Path Traversal vulnerability due to improper validation of user-supplied input in the /tap/dw.php endpoint. The text parameter is used to construct file paths without adequate normalization or restriction to a safe base directory. EPSS estimates a 0.60% chance of exploitation in the next 30 days.

Description

HSC MailInspector 5.3.3-7 has a Path Traversal vulnerability due to improper validation of user-supplied input in the /tap/dw.php endpoint. The text parameter is used to construct file paths without adequate normalization or restriction to a safe base directory. A remote attacker can exploit this flaw to access arbitrary files on the underlying operating system, resulting in unauthorized disclosure of sensitive information.

Metrics

CVSS 3.1

7.5/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

EPSS Probability

0.60%

44.0th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-22

Affected Software

Vendor	Product	Versions
Hsclabs	Mailinspector	5.3.3-7

References

https://github.com/sql3t0/cve-disclosuresThird Party Advisory
https://github.com/sql3t0/cve-disclosures/blob/main/02_-_CVE-2026-29963_LFI%2BPath_Traversal.mdThird Party Advisory
https://hsclabs.com/pt-br/mailinspector/Product

Timeline

Published: May 18, 2026
Last Modified: Jun 17, 2026
Status: Analyzed

Frequently Asked Questions

What is CVE-2026-29963?

How severe is CVE-2026-29963?

CVE-2026-29963 has a CVSS score of 7.5/10 (HIGH severity). The EPSS model estimates a 0.60% probability of exploitation in the next 30 days.

How do I fix CVE-2026-29963?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2026-29963?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST