Improper handling of email input · CVE-2022-31127 · GitHub Advisory Database · GitHub

An attacker can pass a compromised input to the e-mail signin endpoint that contains some malicious HTML, tricking the e-mail server to send it to the user, so they can perform a phishing attack. Eg.: balazs@email.com, <a href="http://attacker.com">Before signing in, claim your money!</a>. This was previously sent to balazs@email.com, and the content of the email containing a link to the attacker's site was rendered in the HTML. This has been remedied in the following releases, by simply not rendering that e-mail in the HTML, since it should be obvious to the receiver what e-mail they used:

next-auth v3 users before version 3.29.8 are impacted. (We recommend upgrading to v4, as v3 is considered unmaintained. See our migration guide)

(This will update to the latest v4 version, but you can change latest to 3 if you want to stay on v3. This is not recommended.)

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