CVE-2021-24565 json
Contact Form 7 Captcha < 0.0.9 - CSRF to Stored XSS
published 2021-08-23 5 y ago modified 2026-06-17 4 mo ago also EUVD-2021-11477
- cvss
- 8.8
- version 3.1, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.7%
- EPSS 0.7% chance of exploitation in 30 days, percentile 54%
- public exploits
- 0
- none known
Summary
The Contact Form 7 Captcha WordPress plugin before 0.0.9 does not have any CSRF check in place when saving its settings, allowing attacker to make a logged in user with the manage_options change them. Furthermore, the settings are not escaped when output in attributes, leading to a Stored Cross-Site Scripting issue.
Patch / fix
- contact_form_7_captcha_project contact_form_7_captcha 0.0.9
Exploit prediction
0.72% chance of exploitation in the next 30 days, higher than 54% of all scored CVEs (FIRST EPSS, 2026-11-08).
Exploits and checks
- wpscan.com https://wpscan.com/vulnerability/97bfef5e-2ee0-491a-a931-4f44c83e5be0 referenced PoC, tagged "exploit" by a source, unverified
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 3.1 | 8.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H |
| NVD | 2.0 | 6.8 | AV:N/AC:M/Au:N/C:P/I:P/A:P |
Affected products
- Unknown Contact Form 7 Captcha
Classification
- Weakness
- Technology feeds
References
-
plugins.trac.wordpress.org
/changeset/2570402
patch, third-party-advisory
-
wpscan.com
/vulnerability/97bfef5e-2ee0-491a-a931-4f44c83e5be0
exploit, third-party-advisory
Sources
- CVE List CVE-2021-24565
- NVD CVE-2021-24565
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