Vulnerability Description
WebDyne versions from 2.031 before 3.022 for Perl execute files with .psp anywhere in the name as Perl pages. WebDyne decides whether to run a requested file as a page by matching its name against WEBDYNE_PSP_EXT_RE, which has no end anchor. An application that accepts uploads by checking only the final extension lets a remote attacker upload a file such as report.psp.pdf and run its embedded Perl by requesting it.
Related Weaknesses (CWE)
References
FAQ
What is CVE-2026-78191?
CVE-2026-78191 is a documented vulnerability. WebDyne versions from 2.031 before 3.022 for Perl execute files with .psp anywhere in the name as Perl pages. WebDyne decides whether to run a requested file as a page by matching its name against WE...
How severe is CVE-2026-78191?
CVSS scoring is not yet available for CVE-2026-78191. Check NVD for updates.
Is there a patch for CVE-2026-78191?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.