CVE-2021-40714 Adobe Experience Manager Reflected Cross Site Scripting via accesskey parameter

Medium 6.1 Published 27 Sep 2021 Updated 23 Apr 2025

An attacker can execute arbitrary JavaScript in a victim's browser by tricking them into visiting a malicious URL in Adobe Experience Manager.

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-2021-40714?

CVE-2021-40714 is a medium-severity cross-site scripting vulnerability in Adobe Experience Manager, published on 27 Sep 2021. 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

Adobe Experience Manager version 6.5.9.0 (and earlier) is affected by a reflected Cross-Site Scripting (XSS) vulnerability via the accesskey parameter. If an attacker is able to convince a victim to visit a URL referencing a vulnerable page, malicious JavaScript content may be executed within the context of the victim's browser

Weakness: CWE-79

Which versions are affected by CVE-2021-40714?

It affects 1 product.

Products include Adobe Experience Manager.

How do I fix CVE-2021-40714?

No fix has been published for CVE-2021-40714 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-2021-40714 being exploited?

There is no known exploitation of CVE-2021-40714 in the wild and no public exploit code.

All Adobe Experience Manager vulnerabilities

Sources

Also known as GHSA-h6rf-r988-mxqw.