CVE-2026-39851 Saleor has a user enumeration vulnerability due to different error messages

Medium 5.3 Published Updated

Attackers can enumerate valid user email addresses via distinct error messages in the requestEmailChange mutation, exposing user data.

Exploited in the wild
Not known
Login needed
Any signed-in user
Attackable
Over the internet
Victim action needed
Not needed
Fix
None listed

What is CVE-2026-39851?

CVE-2026-39851 is a medium-severity vulnerability in saleor, published on 8 Apr 2026. Any signed-in user can exploit it over the network, with no action from the victim.

Official description

Saleor is an e-commerce platform. From 2.10.0 to before 3.23.0a3, 3.22.47, 3.21.54, and 3.20.118, the requestEmailChange() mutation was revealing the existence of user-provided email addresses in error messages. This vulnerability is fixed in 3.23.0a3, 3.22.47, 3.21.54, and 3.20.118.

Weakness: CWE-204

Which versions are affected by CVE-2026-39851?

It affects 1 product.

Products include Saleor Saleor.

How do I fix CVE-2026-39851?

No fix has been published for CVE-2026-39851 yet. Limit exposure of the affected software until one is available.

Is CVE-2026-39851 being exploited?

There is no known exploitation of CVE-2026-39851 in the wild and no public exploit code.

Sources

Also known as GHSA-m3rm-m4vq-27x7.

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