CVE-2023-2406 json
Event Registration Calendar By vcita <= 1.3.1 & Online Payments – Get Paid with PayPal, Square & Stripe <= 3.9.1 - Authenticated (Contributor+) Stored Cross-Site Scripting
published 2023-06-03 3 y ago modified 2026-06-17 4 mo ago also EUVD-2023-33896
- cvss
- 6.4
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.8%
- EPSS 0.8% chance of exploitation in 30 days, percentile 55%
- public exploits
- 0
- none known
Summary
The Event Registration Calendar By vcita plugin, versions up to and including 3.9.1, and Online Payments – Get Paid with PayPal, Square & Stripe plugin, for WordPress are vulnerable to Stored Cross-Site Scripting via the 'email' parameter in versions up to, and including, 1.3.1 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers with the edit_posts capability, such as contributors and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.
CISA SSVC
- Exploitation
- none
- Automatable
- no
- Technical impact
- partial
- Assessed
- 22 mo ago
Exploit prediction
0.76% chance of exploitation in the next 30 days, higher than 55% of all scored CVEs (FIRST EPSS, 2026-11-08).
Exploits and checks
- plugins.trac.wordpress.org https://plugins.trac.wordpress.org/browser/event-registration-calendar-by-vcita/trunk/system/parse_vcita_callback.php#L55 referenced PoC, tagged "exploit" by a source, unverified
- plugins.trac.wordpress.org https://plugins.trac.wordpress.org/browser/paypal-payment-button-by-vcita/trunk/system/parse_vcita_callback.php referenced PoC, tagged "exploit" by a source, unverified
- blog.jonh.eu https://blog.jonh.eu/blog/security-vulnerabilities-in-wordpress-plugins-by-vcita referenced PoC, tagged "exploit" by a source, unverified
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 6.4 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N |
| NVD | 3.1 | 5.4 | CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N |
Affected products
- vcita Event Registration Calendar By vcita
- vcita Online Payments – Get Paid with PayPal, Square & Stripe
Classification
- Weakness
-
- CWE-79 Improper Neutralization of Input During Web Page Generation
- Technology feeds
References
-
plugins.trac.wordpress.org
/browser/event-registration-calendar-by-vcita/trunk/system/parse_vcita_callback.php#L55
exploit
-
plugins.trac.wordpress.org
/browser/paypal-payment-button-by-vcita/trunk/system/parse_vcita_callback.php
exploit
-
blog.jonh.eu
/blog/security-vulnerabilities-in-wordpress-plugins-by-vcita
exploit, third-party-advisory
-
wordfence.com
/threat-intel/vulnerabilities/id/1ab05954-9999-43ff-8e3c-a987e2da1956?source=cve
broken-link
- plugins.trac.wordpress.org /changeset?sfp_email=&sfph_mail=&reponame=&old=2924420%40event-registration-calendar-by-vcita&new=2924420%40ev
- plugins.trac.wordpress.org /changeset?sfp_email=&sfph_mail=&reponame=&old=2924423%40paypal-payment-button-by-vcita&new=2924423%40paypal-p
- plugins.trac.wordpress.org /changeset/2924423/paypal-payment-button-by-vcita
Sources
- CVE List CVE-2023-2406
- NVD CVE-2023-2406
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.