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TI-2026-63198 Aliases CVE-2026-93871GHSA-gp9j-h9gm-p3q2

Cotonti through 1.0.0 Stored Open Redirect via Page redir: Prefix

Priority MEDIUM 56CWE-601Published · Updated

Key facts

Attack vector
Network
Privileges required
Low
User interaction
Passive
Attack complexity
Low
Attack requirements
None
Impact type
Spoofing
Confidentiality · integrity · availability
Low · Low · None
Fix status
No fix listed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-601.

Summary

Cotonti through 1.0.0 fails to validate redirect destinations in page bodies prefixed with redir:, allowing authenticated users with page creation or edit permissions to store redirects to arbitrary external hosts. Attackers can craft pages on trusted domains that redirect visitors to malicious sites for phishing attacks without administrative privileges.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00274 19th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
Poc
Automatable
No
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
CotontiCotontiup to 1.0.0—No fix listedCNA
  • Cotonti VendorCotonti Affected up to 1.0.0 Fixed in — No fix listed CNA

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-93871
  2. 2026-10-03 Alias added: GHSA-gp9j-h9gm-p3q2

References

Patch 1

Other 3

  • TI-2026-62074 Cotonti 1.0.0 Comments Plugin PHP Object Injection via ci Parameter CVSS 4.0CRITICAL 9.3
  • TI-2026-63195 Cotonti through 1.0.0 Predictable Password Recovery Token via Weak PRNG CVSS 4.0CRITICAL 9.2
  • TI-2026-41862 Cotonti Siena 0.9.26 CSRF via admin.php Config Update Endpoint CVSS 4.0HIGH 8.7
  • TI-2026-84359 Predictable tokens in Cotonti let attackers bypass email verification CVSS 4.0MEDIUM 6.3
  • TI-2025-28591 A vulnerability has been found in Cotonti Siena v0.9.25. CVSS 3.1MEDIUM 5.4
  • TI-2024-16007 A stored cross-site scripting (XSS) vulnerability in the Edit Page function of Cotonti… CVSS 3.1MEDIUM 5.4
See all 26 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences