CVE-2021-43764 Adobe Experience Manager Stored XSS in the Spin Set

High 8.0 Published 13 Jan 2022 Updated 16 Sep 2024

Attackers can inject malicious scripts into form fields, leading to code execution in victims' browsers when they view the affected page.

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-2021-43764?

CVE-2021-43764 is a high-severity cross-site scripting vulnerability in Adobe Experience Manager, published on 13 Jan 2022. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.

Official description

AEM's Cloud Service offering, as well as version 6.5.10.0 (and below) are affected by a stored Cross-Site Scripting (XSS) vulnerability that could be abused by an attacker to inject malicious scripts into vulnerable form fields. Malicious JavaScript may be executed in a victim’s browser when they browse to the page containing the vulnerable field.

Weakness: CWE-79

Which versions are affected by CVE-2021-43764?

It affects 2 products.

Products include Adobe Experience Manager, Adobe Experience Manager Cloud Service.

How do I fix CVE-2021-43764?

No fix has been published for CVE-2021-43764 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-2021-43764 being exploited?

There is no known exploitation of CVE-2021-43764 in the wild and no public exploit code.

All Adobe Experience Manager vulnerabilities

Sources

Also known as GHSA-gp9h-c443-v4xc.