CVE-2026-93873 json
Cotonti through 1.0.0 Cross-Site Request Forgery in the Contact Plugin
published last mo. modified last mo. also EUVD-2026-83370
- cvss
- 4.3
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.2%
- EPSS 0.2% chance of exploitation in 30 days, percentile 8%
- public exploits
- 0
- none known
Summary
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.
Patch / fix
- github.com/Cotonti/Cotonti#1903 pull request
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Check with FencerCISA SSVC
- Exploitation
- Proof of concept is public
- Automatable
- no
- Technical impact
- partial
- Assessed
- last mo.
Exploit prediction
0.19% chance of exploitation in the next 30 days, higher than 8% of all scored CVEs (FIRST EPSS, 2026-11-11).
Exploits and checks
- github.com https://github.com/Cotonti/Cotonti/issues/1895 referenced PoC, tagged "exploit" by a source, unverified
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 4.0 | 5.3 | 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 |
| CNA | 3.1 | 4.3 | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N |
| CNA | 4.0 | 5.3 | 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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X |
Affected products
- Cotonti Cotonti
Classification
- Weakness
-
- CWE-352 Cross-Site Request Forgery
References
-
github.com
/Cotonti/Cotonti/pull/1903
patch, issue-tracking
-
github.com
/Cotonti/Cotonti/issues/1895
issue-tracking, exploit
-
github.com
/Cotonti/Cotonti/blob/1.0.0/plugins/contact/contact.php
technical-description
-
github.com
/Cotonti/Cotonti
product
-
vulncheck.com
/advisories/cotonti-through-1.0.0-cross-site-request-forgery-in-the-contact-plugin
third-party-advisory
Sources
- CVE List CVE-2026-93873
- NVD CVE-2026-93873
Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.
CPEs and fixed versions use Anchore's correction of NVD's data: Added CPE configurations because not yet analyzed by NVD.