CVE-2021-24817 Ultimate NoFollow <= 1.4.8 - Contributor+ Stored Cross-Site Scripting
Contributors can inject malicious scripts via shortcode href attributes, potentially compromising user sessions and site integrity.
- 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-2021-24817?
CVE-2021-24817 is a medium-severity cross-site scripting vulnerability in Unknown Ultimate Nofollow, published on 13 Dec 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 Ultimate NoFollow WordPress plugin through 1.4.8 does not sanitise and escape the href attribute of its shortcodes, allowing users with a role as low as contributor to perform Cross-Site Scripting attacks
Weakness: CWE-79
Which versions are affected by CVE-2021-24817?
It affects 1 product.
Products include Ultimate Nofollow Project Ultimate Nofollow.
How do I fix CVE-2021-24817?
No fix has been published for CVE-2021-24817 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-2021-24817 being exploited?
There is no known exploitation of CVE-2021-24817 in the wild and no public exploit code.
Sources
Also known as GHSA-4fr3-cmqh-r8mx.