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.

Attack Vector Network

Attack Complexity Low

Privileges Required None

Attack Requirements None

User Interaction Passive

Vulnerable System Confidentiality Impact None

Vulnerable System Integrity Impact Low

Vulnerable System Availability Impact None

Subsequent System Confidentiality Impact None

Subsequent System Integrity Impact None

Subsequent System Availability Impact None

Attack Vector Network

Attack Complexity Low

Privileges Required None

Scope Unchanged

Confidentiality Impact None

Integrity Impact Low

Availability Impact None

User Interaction Required

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

The EPSS score is 0.00156.

Exploitation poc

Automatable no

Technical Impact partial

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions
Cotonti Cotonti unaffected
Version Status Constraints
0 affected ≤ 1.0.0

No data.

No data.

No data.

Project Subscriptions

Vendors Products
Cotonti Subscribe
Cotonti Siena Subscribe
Advisories

No advisories yet.

Fixes

Solution

No solution given by the vendor.

Workaround

No workaround given by the vendor.

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

Fri, 18 Sep 2026 21:30:00 +0000

Type Values Removed Values Added
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.
Title Cotonti through 1.0.0 Cross-Site Request Forgery in the Contact Plugin
First Time appeared Cotonti
Cotonti cotonti Siena
Weaknesses CWE-352
CPEs cpe:2.3:a:cotonti:cotonti_siena:*:*:*:*:*:*:*:*
Vendors & Products Cotonti
Cotonti cotonti Siena
References
Metrics cvssV3_1

{'score': 4.3, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N'}

cvssV4_0

{'score': 5.3, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N'}

ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'poc', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: VulnCheck

Published:

Updated: 2026-09-18T20:21:09.601Z

Reserved: 2026-09-18T19:39:42.366Z

Link: CVE-2026-93873

cve-icon Vulnrichment

Updated: 2026-09-18T20:21:03.207Z

cve-icon NVD

Status : Received

Published: 2026-09-18T20:17:35.400

Modified: 2026-09-18T21:18:49.167

Link: CVE-2026-93873

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

No data.

Weaknesses