CVE-2026-78188 · agentprime

WebDyne versions from 2.014 before 3.022 for Perl issue session cookies without the Secure, HttpOnly and SameSite attributes

No CVSS scoreEPSS 0.0013 · 2nd percentile

Published by the CVE Program (CNA: CPANSec) at 31 Oct 2026, 14:33 UTC. agentprime has not analysed this yet, so whether it affects any app is not known. This CVE names a vendor and product rather than a package, so the lockfile check doesn’t match it.

Affected products, as the CNA wrote them
Vendor	Product	Versions
Not given	Not given Package name: WebDyne https://cpan.org/modules pkg:cpan/WebDyne	affected 2.014 to before 3.022 custom Other versions: unaffected

Identifiers

CVE-2026-78188

CNA

CPANSec

Weakness (CWE)

CWE-614 · CWE-1004 · CWE-1275

Machine-written summary

Summary written by Claude Haiku from the source advisory. Not reviewed by a person.

WebDyne versions from 2.014 before 3.022 set session cookies without the Secure, HttpOnly, or SameSite attributes. A network attacker on a plain HTTP connection, a script injected into a page, or a third-party site can use the cookie to take over a session. The source gives few details on conditions beyond this. No fix version is listed in the source beyond 3.022, so upgrade to 3.022 or later.

Written 5 Nov 2026.

Not analysed yet

We haven’t published our own analysis of this CVE. If a person reviews it, this page will say what’s affected and what has to be true for it to matter.

Severity and exploitation

No source has published a CVSS score for this record yet.

CISA KEV Not listed.
EPSS 0.0013, the 2nd percentile, on 5 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

Timeline

31 Oct 2026, 14:33 UTC Confirmed by the CVE List
31 Oct 2026, 14:39 UTC First seen by agentprime
31 Oct 2026, 15:16 UTC Confirmed by NVD

Sources

References from the CNA

metacpan.org/release/ASPEER/WebDyne-3.022/changes release-notes

Facts on this page come from the CVE List as the CNA published them, with CVSS from the sources named above, CISA KEV and FIRST EPSS. Vendors, products and versions are shown as the CNA wrote them. We don’t reproduce the CVE’s description.