CVE-2026-93873: Cotonti through 1.0.0 fails to validate anti-CSRF tokens in the contact plugin submission handler
Affects CotontiSource GCVE Database
Not known to be exploited · CVSS 4.3 Medium.
Data as of 2 Nov 2026, 22:58 UTC
- EPSS
- 0.1% chance of exploitation in 30 days – higher than 8% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:NExploitation evidence
Disclosed: evidence found.
CVE published 18 Sep 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors
A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 2 Nov 2026.
What to do
Affected software
| Product | Affected | Fixed in |
|---|---|---|
GitHubcotonti/Cotontipkg:github/cotonti/CotontiOther threats | Affected
| Fixed in– |
Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.
AI-suggested
Until a fix is available, administrators should consider disabling the vulnerable contact plugin or implementing additional CSRF protections at the application or web server level.
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.
References
- nvd.nist.gov/vuln/detail/CVE-2026-93873 (opens in a new tab)
- github.com/Cotonti/Cotonti/issues/1895 (opens in a new tab)
- github.com/Cotonti/Cotonti/pull/1903 (opens in a new tab)
- github.com/Cotonti/Cotonti (opens in a new tab)
- github.com/Cotonti/Cotonti/blob/1.0.0/plugins/contact/contact.php (opens in a new tab)
- vulncheck.com/advisories/cotonti-through-1.0.0-cross-site-request-forgery-in-the-contact-plugin (opens in a new tab)