CVE-2026-34658 Adobe Commerce | Cross-site Scripting (Stored XSS) (CWE-79)

Medium 4.8 Published 12 May 2026 Updated 27 Aug 2026

High-privileged attackers can inject malicious scripts into Adobe Commerce form fields, leading to script execution in victim browsers.

Exploited in the wild: Not known
Login needed: An administrator
Attackable: Over the internet
Victim action needed: A user has to click or open something
Fix: None listed

What is CVE-2026-34658?

CVE-2026-34658 is a medium-severity cross-site scripting vulnerability in Adobe Commerce, published on 12 May 2026. An attacker needs administrator access to exploit it, and only if a user opens a file or follows a link.

Official description

Adobe Commerce versions 2.4.9-beta1, 2.4.8-p4, 2.4.7-p9, 2.4.6-p14, 2.4.5-p16, 2.4.4-p17 and earlier are affected by a stored Cross-Site Scripting (XSS) vulnerability that could be abused by a high-privileged 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. Scope is changed.

Weakness: CWE-79

Which versions are affected by CVE-2026-34658?

It affects 3 products.

Products include Adobe Commerce, Adobe Commerce B2b, Adobe Magento.

How do I fix CVE-2026-34658?

No fix has been published for CVE-2026-34658 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-2026-34658 being exploited?

There is no known exploitation of CVE-2026-34658 in the wild and no public exploit code.

All Adobe Commerce vulnerabilities

Sources

Also known as GHSA-5mxp-wm76-rf59.