CVE-2021-24408 Prismatic < 2.8 - Contributor+ Stored XSS
Contributors or editors can inject malicious scripts via shortcode parameters in the Prismatic plugin, potentially leading to session hijacking or site defacement.
- 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-2021-24408?
CVE-2021-24408 is a medium-severity cross-site scripting vulnerability in Jeff Starr Prismatic, published on 12 Jul 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 Prismatic WordPress plugin before 2.8 does not sanitise or validate some of its shortcode parameters, allowing users with a role as low as Contributor to set Cross-Site payload in them. A post made by a contributor would still have to be approved by an admin to have the XSS trigger able 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-2021-24408?
It affects 1 product.
Products include Plugin-Planet Prismatic.
How do I fix CVE-2021-24408?
No fix has been published for CVE-2021-24408 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-2021-24408 being exploited?
There is no known exploitation of CVE-2021-24408 in the wild and no public exploit code.
Other vulnerabilities in Jeff Starr Prismatic
Sources
Also known as GHSA-vc6f-wccw-cfjq.