# CVE-2026-78188: WebDyne session cookie missing Secure, HttpOnly, SameSite attributes

Source: https://junglewise.ai/threats/cve-2026-78188-webdyne-versions-from-2-014-before-3-022-for-perl-issue-session  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-10-31. Updated: 2026-10-31  
License: CC BY 4.0 with a link back

CVE-2026-78188 · Severity: info · Published 2026-10-31

WebDyne is a Perl web application framework that handles user sessions. Versions before 3.022 issue session cookies without security attributes, allowing attackers on the network or malicious scripts to steal session IDs, hijack user accounts, and perform actions on behalf of the victim.

Technologies: [ASPEER WebDyne](https://junglewise.ai/threats/technologies/webdyne). Vendors: [ASPEER](https://junglewise.ai/threats/vendors/aspeer).

## Quick answers

**Is CVE-2026-78188 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-78188 being exploited in the wild.

**How severe is CVE-2026-78188?** Informational severity, published 31 October 2026.

**Which products and versions are affected?** ASPEER WebDyne 2.014 to 3.021.

**Is there a fix for CVE-2026-78188?** Yes: fixed in WebDyne 3.022. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

**How is CVE-2026-78188 attacked?** It is attacked over the network or from the adjacent network, in a software library.

**Am I affected by CVE-2026-78188?** Check whether you run ASPEER WebDyne at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## How to fix

- Fixed in WebDyne 3.022

## Technical details

WebDyne::Session sets cookies with only name, value, and path, omitting the Secure, HttpOnly, and SameSite flags. This allows session IDs to be transmitted over plain HTTP, accessed by JavaScript, and sent cross-site. An attacker with network access or injected script can capture the cookie and reuse it for account takeover. Version 3.022 fixes the issue by emitting Secure, HttpOnly, and SameSite=Lax cookies by default.

## Affected products

- ASPEER WebDyne 2.014 to 3.021

## Timeline

- 2026-10-31: disclosed
- 2026-08-25: patched

## References

- [https://cpan.org/modules](https://cpan.org/modules)
- [https://metacpan.org/release/ASPEER/WebDyne-3.022/changes](https://metacpan.org/release/ASPEER/WebDyne-3.022/changes)

## Related threats

- [WebDyne source code disclosure via default index viewer](https://junglewise.ai/threats/cve-2026-78192-webdyne-versions-from-2-022-before-3-022-for-perl-disclose)
- [WebDyne PSP extension matching regex remote code execution](https://junglewise.ai/threats/cve-2026-78191-webdyne-versions-from-2-031-before-3-022-for-perl-execute-files)
- [WebDyne reflected XSS via unescaped form field values](https://junglewise.ai/threats/cve-2026-78190-webdyne-versions-from-2-014-before-3-022-for-perl-reflect-request)
- [WebDyne path traversal in PSGI API route fallback](https://junglewise.ai/threats/cve-2026-78189-webdyne-versions-from-3-007-before-3-022-for-perl-execute-psp)