Vulnerability · Published Oct 31, 2026 · Assigned by CPANSec
CVE-2026-78192WebDyne versions from 2.022 before 3.022 for Perl disclose application source to unauthenticated clients via the viewer in the default index page
Unrated
In plain English
A security flaw in WebDyne. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 13% of all known vulnerabilities).
Official description
WebDyne versions from 2.022 before 3.022 for Perl disclose application source to unauthenticated clients via the viewer in the default index page. WebDyne's wrapper scripts, such as webdyne.psgi, enable the built-in index page by default. Its source viewer returns files under the document root named in the source parameter of an HTMX request, including .psp, .pm and .pl files. A remote attacker can read the application's Perl code, including the __PERL__ blocks of .psp pages and any credentials they hold.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| WebDyne | 2.022 – before 3.022 |
Weakness: CWE-540, CWE-1188