CVE-2026-29963 Path traversal in n/a
A remote attacker can exploit a path traversal flaw in HSC MailInspector to access arbitrary files on the server, leading to unauthorized disclosure of sensitive information.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-29963?
CVE-2026-29963 is a high-severity path traversal vulnerability in n/a, published on 18 May 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official 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.
Weakness: CWE-22
Which versions are affected by CVE-2026-29963?
It affects 1 product.
Products include Hsclabs Mailinspector.
How do I fix CVE-2026-29963?
No fix has been published for CVE-2026-29963 yet. Limit exposure of the affected software until one is available.
Upgrade, and resolve every user-supplied path against an allowed base folder before opening it. More about Path traversal.
Is CVE-2026-29963 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-29963 exists.
Public exploit code: 1 Nuclei template.
Other vulnerabilities in n/a
Sources
Also known as GHSA-wcm2-h52j-8wcv.