XSS in Contact Form 7 Captcha Project
CVE-2021-24565
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.
Vulnerability class: XSS (Cross-Site Scripting)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.007 (52.4th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 52nd percentile — 52.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.007 · newest: 0.007 · change: 0.000
Affected products
- Contact Form 7 Captcha Project
- Contact Form 7 Captcha — versions 0.0.9
Weakness classification (CWE)
Public proof-of-concept exploits
References
- wpscan.com/vulnerability/97bfef5e-2ee0-491a-a931-4f44c83e5be0 (Exploit, Third Party Advisory)
- plugins.trac.wordpress.org/changeset/2570402 (Patch, Third Party Advisory)
Frequently asked questions
- What is CVE-2021-24565?
- CVE-2021-24565 is a high-severity vulnerability in Contact Form 7 Captcha Project, classified under Cross-site Scripting. CVSS score: 8.8/10. Published 2021-08-23.
- How severe is CVE-2021-24565?
- High severity. CVSS v3 base score is 8.8 out of 10.
- Is CVE-2021-24565 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.