CVE-2026-21359 Adobe Commerce | Incorrect Authorization (CWE-863)

Medium 4.7 Published 11 Mar 2026 Updated 27 Aug 2026

Attackers can bypass security measures in Adobe Commerce to impact data integrity and availability without user interaction.

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-2026-21359?

CVE-2026-21359 is a medium-severity missing authorization vulnerability in Adobe Commerce, published on 11 Mar 2026. 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 Commerce versions 2.4.9-alpha3, 2.4.8-p3, 2.4.7-p8, 2.4.6-p13, 2.4.5-p15, 2.4.4-p16 and earlier are affected by an Incorrect Authorization vulnerability that could result in a Security feature bypass. An attacker could leverage this vulnerability to bypass security measures and have limited impact to the integrity and availability of data. The exploit depends on conditions beyond the attacker's control. Exploitation of this issue does not require user interaction.

Weakness: CWE-863

Which versions are affected by CVE-2026-21359?

It affects 3 products.

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

How do I fix CVE-2026-21359?

No fix has been published for CVE-2026-21359 yet. Limit exposure of the affected software until one is available.

Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.

Is CVE-2026-21359 being exploited?

There is no known exploitation of CVE-2026-21359 in the wild and no public exploit code.

All Adobe Commerce vulnerabilities

Sources

Also known as GHSA-r887-hmxm-r2h5.