CVE-2026-78192
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 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.
Fixes and workarounds
Fix
Upgrade to WebDyne 3.022 or later.
Source: CNA: CPANSecAffected products and versions
| Product | Versions | Authority |
|---|---|---|
WebDyne
cpan |
≥ 2.022; < 3.022 (affected, custom)
Other versions: unaffected |
CNA: CPANSec |
Version ranges are source assertions. Check the vendor advisory and your installed configuration before determining exposure.
CVSS assessments
| Version / score | Vector | Authority |
|---|---|---|
| 3.1 / 7.5 high |
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N | ADP: CISA-ADP |
Exploit evidence
No exploit evidence in collected sources. This is not proof of no exploitation.
References
- https://metacpan.org/release/ASPEER/WebDyne-3.022/changesCNA: CPANSec · release-notes
- https://metacpan.org/release/ASPEER/WebDyne-3.022/changes9b29abf9-4ab0-4765-b253-1875cd9b441e
For agents and automation
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