CVE-2023-2528 json
Contact Form by Supsystic <= 1.7.24 - Cross-Site Request Forgery via AJAX action
published 2023-05-16 3 y ago modified 2026-06-17 4 mo ago also EUVD-2023-34008
- cvss
- 5.4
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.3%
- EPSS 0.3% chance of exploitation in 30 days, percentile 25%
- public exploits
- 0
- none known
Summary
The Contact Form by Supsystic plugin for WordPress is vulnerable to Cross-Site Request Forgery in versions up to, and including, 1.7.24. This is due to missing or incorrect nonce validation on the AJAX action handler. This makes it possible for unauthenticated attackers to execute AJAX actions via a forged request granted they can trick a site administrator into performing an action such as clicking on a link.
CISA SSVC
- Exploitation
- none
- Automatable
- no
- Technical impact
- partial
- Assessed
- 21 mo ago
Exploit prediction
0.32% chance of exploitation in the next 30 days, higher than 25% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 5.4 | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:L |
| NVD | 3.1 | 8.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H |
Affected products
- supsysticcom Contact Form by Supsystic
Classification
- Weakness
-
- CWE-352 Cross-Site Request Forgery
- Technology feeds
References
-
wordfence.com
/threat-intel/vulnerabilities/id/1c387b07-baf6-4c62-943e-4bd121160ceb?source=cve
third-party-advisory
-
plugins.trac.wordpress.org
/browser/contact-form-by-supsystic/trunk/classes/frame.php?rev=2777737#L297
issue-tracking
-
plugins.trac.wordpress.org
/browser/contact-form-by-supsystic/trunk/classes/frame.php?rev=2912584#L230
issue-tracking
Sources
- CVE List CVE-2023-2528
- NVD CVE-2023-2528
Fencer Vulns 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.