XSS in A3rev Page View Count
CVE-2021-24509
The Page View Count WordPress plugin before 2.4.9 does not escape the postid parameter of pvc_stats shortcode, allowing users with a role as low as Contributor to perform Stored XSS attacks. A post made by a contributor would still have to be approved by an admin to have the XSS triggered in the frontend, however, higher privilege users, such as editor could exploit this without the need of approval, and even when the blog disallows the unfiltered_html capability.
Vulnerability class: XSS (Cross-Site Scripting)
EPSS: 0.006 (46.3th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 5.4 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N.
Affected products
- A3rev Page_view_count
- Unknown Page View Count — versions 2.4.9
Weakness classification (CWE)
Public proof-of-concept exploits
References
- contact@wpscan.com (Exploit, Third Party Advisory, x_refsource_MISC)
Frequently asked questions
- What is CVE-2021-24509?
- CVE-2021-24509 is a medium-severity vulnerability in A3rev Page View Count, classified under Cross-site Scripting. CVSS score: 5.4/10. Published 2021-08-09.
- How severe is CVE-2021-24509?
- Medium severity. CVSS v3 base score is 5.4 out of 10.
- Is CVE-2021-24509 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.