What’s Vulnerable › Vulnerabilities

CVE-2026-93873: Cotonti through 1.0.0 Cross-Site Request Forgery in the Contact Plugin

• Severity: medium (CVSS 4.3 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.2% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-09-18 · updated 2026-09-22
• Weakness: CWE-352

Description

Cotonti through 1.0.0 fails to validate anti-CSRF tokens in the contact plugin submission handler, allowing attackers to forge messages. Attackers can auto-submit contact forms from attacker-controlled pages to send forged messages attributed to authenticated victims to the administrator inbox.

Affected products

• Cotonti: through 1.0.0

References

• https://github.com/Cotonti/Cotonti
• https://github.com/Cotonti/Cotonti/blob/1.0.0/plugins/contact/contact.php
• https://github.com/Cotonti/Cotonti/issues/1895
• https://github.com/Cotonti/Cotonti/pull/1903
• https://www.vulncheck.com/advisories/cotonti-through-1.0.0-cross-site-request-forgery-in-the-contact-plugin
• https://github.com/Cotonti/Cotonti/issues/1895

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