CVE-2026-78191: WebDyne versions from 2.031 before 3.022 for Perl execute files with .psp anywhere in the name as
Source GCVE Database
Not known to be exploited : upgrade to 3.022 soon.
Data as of 31 Oct 2026, 18:09 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
If you cannot patch yet, applications should not rely solely on the final file extension to validate uploads and should implement stricter validation of filenames and uploaded content to prevent execution of unintended files.
Description
WebDyne versions from 2.031 up to but not including 3.022 for Perl execute files with .psp anywhere in the filename as Perl pages. This behavior allows an attacker to upload files with names like report.psp.pdf and have them executed as Perl code by the server.