Path Traversal in Hsclabs Mailinspector
CVE-2026-29963
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.
Vulnerability class: Path Traversal (Directory Traversal)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N.
EPSS exploit prediction
EPSS: 0.030 (86.9th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 87th percentile — 86.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.006 · newest: 0.030 · change: +0.024
Affected products
- Hsclabs Mailinspector — versions 5.3.3-7
Weakness classification (CWE)
References
- hsclabs.com/pt-br/mailinspector/ (Product)
- github.com/sql3t0/cve-disclosures (Third Party Advisory)
- github.com/sql3t0/cve-disclosures/blob/main/02_-_CVE-2026-29963_LFI+Path_Traver… (Third Party Advisory)
Frequently asked questions
- What is CVE-2026-29963?
- CVE-2026-29963 is a high-severity vulnerability in Hsclabs Mailinspector, classified under Path Traversal. CVSS score: 7.5/10. Published 2026-05-18.
- How severe is CVE-2026-29963?
- High severity. CVSS v3 base score is 7.5 out of 10.