CVE-2023-2582 Cross-site scripting in Strikingly
Prototype pollution in Strikingly CMS allows reflected XSS via crafted links, enabling arbitrary JavaScript execution in the victim's browser.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2023-2582?
CVE-2023-2582 is a medium-severity cross-site scripting vulnerability in Strikingly, published on 8 May 2023. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Official description
A prototype pollution vulnerability exists in Strikingly CMS which can result in reflected cross-site scripting (XSS) in affected applications and sites built with Strikingly. The vulnerability exists because of Strikingly JavaScript library parsing the URL fragment allows access to the __proto__ or constructor properties and the Object prototype. By leveraging an embedded gadget like jQuery, an attacker who convinces a victim to visit a specially crafted link could achieve arbitrary javascript execution in the context of the user's browser.
Weakness: CWE-1321
Which versions are affected by CVE-2023-2582?
It affects 1 product.
Products include Strikingly Strikingly.
How do I fix CVE-2023-2582?
No fix has been published for CVE-2023-2582 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-2023-2582 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2023-2582 exists.
Sources
Also known as GHSA-w545-g5fp-84fq.