CVE-2021-24509 Page View Counts < 2.4.9 - Contributor+ Stored XSS
Contributors can inject malicious scripts via the postid parameter in the Page View Count plugin, potentially leading to code execution or account takeover.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2021-24509?
CVE-2021-24509 is a medium-severity cross-site scripting vulnerability in Unknown Page View Count, published on 9 Aug 2021. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.
Official description
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.
Weakness: CWE-79
Which versions are affected by CVE-2021-24509?
It affects 1 product.
Products include A3rev Page View Count.
How do I fix CVE-2021-24509?
No fix has been published for CVE-2021-24509 yet. Limit exposure of the affected software until one is available.
Escape output for the context it lands in and set a strict Content Security Policy. Upgrading the affected component is the real fix. More about Cross-site scripting.
Is CVE-2021-24509 being exploited?
There is no known exploitation of CVE-2021-24509 in the wild and no public exploit code.
Other vulnerabilities in Unknown Page View Count
- CVE-2022-0434 Page Views Count < 2.4.15 - Unauthenticated SQL Injection
- CVE-2025-2816 Page View Count 2.8.0 - 2.8.4 - Missing Authorization to Authenticated (Subscriber+) Limited Options Update
- CVE-2023-0095 Page View Count < 2.6.1 - Contributor+ Stored XSS
- CVE-2022-40131 WordPress Page View Count plugin <= 2.5.5 - Cross-Site Request Forgery (CSRF) vulnerability
Sources
Also known as GHSA-qjp7-r5pf-4fvh.