CVE-2026-29963 Details.
HSC MailInspector - Unauthenticated Arbitrary File Read
Atlas does not check this one. Works by exploiting the flaw.
The only reliable test for this one is to try the weakness itself, which can disturb the site. Atlas does not do that, so it does not run this check.
About CVE-2026-29963. What It Means.
HSC MailInspector 5.3.3-7 contains a path traversal caused by improper validation of user-supplied input in /tap/dw.php text parameter, letting remote attackers access arbitrary files, exploit requires crafted request.
Affected Product. What Is Hit.
- Vendor
- hsclabs
- Product
- Hsclabs MailInspector
More CVEs In Hsclabs MailInspector.
FAQ
Common Questions.
HSC MailInspector - Unauthenticated Arbitrary File Read. HSC MailInspector 5.3.3-7 contains a path traversal caused by improper validation of user-supplied input in /tap/dw.php text parameter, letting remote attackers access arbitrary files, exploit requires crafted request.
No. The only reliable test for this one is to try the weakness itself, which can disturb the site. Atlas does not do that, so it does not run this check. The facts about CVE-2026-29963 are on this page, and you can request a demo to see how Brandefense watches your whole external attack surface.
CVE-2026-29963 is not on the CISA Known Exploited Vulnerabilities list at the time of writing, but it is still worth fixing.
Update Hsclabs MailInspector to the latest version from the vendor, or follow the vendor's advice to switch off the affected feature. Vendor links are listed on this page when they are known.
This page lists the public facts about CVE-2026-29963. Atlas does not run a check for it, so nothing here says whether a particular site is affected.