CVE-2026-93871: Cotonti unvalidated redirect in page body

CVE-2026-93871 · Severity: medium · CVSS 5.4 · Published 2026-09-18

Cotonti is a PHP content management framework used to build websites. Authenticated users with page creation or editing permissions can craft malicious redirects by prefixing page content with "redir:" and an arbitrary external URL. When visitors view these pages on the trusted Cotonti site, they are redirected to attacker-controlled domains, enabling phishing attacks and credential theft without requiring administrator access.

Technologies: Cotonti. Vendors: Cotonti.

Quick answers

Is CVE-2026-93871 exploited in the wild?
No. Junglewise Threat Intelligence has no report of CVE-2026-93871 being exploited in the wild.
How severe is CVE-2026-93871?
Medium severity, with a CVSS score of 5.4, published 18 September 2026.
Which products and versions are affected?
Cotonti through 1.0.0.
Is there a fix for CVE-2026-93871?
No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
How is CVE-2026-93871 attacked?
It is attacked over the network, in a web application.
Am I affected by CVE-2026-93871?
Check whether you run Cotonti 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.

Technical details

The vulnerability is an unvalidated redirect in the page module (page.main.php) affecting Cotonti through version 1.0.0. Authenticated users with page edit permissions can inject redirect destinations prefixed with "redir:" in page bodies without validation of the target URL. An attacker with these privileges can host redirects on trusted domains to perform phishing attacks; exploitation requires authentication and user interaction (clicking the link).

Affected products

  • Cotonti Cotonti through 1.0.0

Timeline

  • 2026-09-18: disclosed: CVE-2026-93871 published

References

This page as Markdown. Free to reuse under CC BY 4.0 with a link back.