CVE-2026-78189: WebDyne (Perl module) · Path Traversal
Affects WebDyne (Perl module)Source CVE Database V5
Not known to be exploited : upgrade to 3.022 soon.
Data as of 31 Oct 2026, 14:54 UTC
Rated High by Threat Radar's AI analysis · CVSS not yet scored by NVD
Thin evidence
One scorer or none- Patch
- Available – fixed in 3.022
Exploitation evidence
Disclosed: evidence found.
CVE published 31 Oct 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors
A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 30 Oct 2026.
What to do
Upgrade WebDyne (Perl module) to 3.022.
Affected software
| Product | Affected | Fixed in |
|---|---|---|
| WebDyne | Affected
| Fixed in
|
CPANWebDynepkg:cpan/WebDyneOther threats | Affected
| Fixed in
|
Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.
AI-suggested
A fix is available in WebDyne version 3.022. Users should upgrade to version 3.022 or later to remediate this vulnerability.
Description
CVE-2026-78189 is a path traversal vulnerability in WebDyne Perl versions from 3.007 up to but not including 3.022. It allows remote attackers to execute .psp files outside the document root by exploiting the PSGI API route fallback mechanism. The vulnerability arises because the PSGI handler does not properly sanitize path segments containing '..', enabling access to files outside the intended directory.