CVE-2022-35924
Verification requests (magic link) sent to unwanted emails
- Published
- Updated
- Reserved
- Assigned by
- GitHub_M
Description
NextAuth.js is a complete open source authentication solution for Next.js applications. `next-auth` users who are using the `EmailProvider` either in versions before `4.10.3` or `3.29.10` are affected. If an attacker could forge a request that sent a comma-separated list of emails (eg.: `[email protected],[email protected]`) to the sign-in endpoint, NextAuth.js would send emails to both the attacker and the victim's e-mail addresses. The attacker could then login as a newly created user with the email being `[email protected],[email protected]`. This means that basic authorization like `email.endsWith("@victim.com")` in the `signIn` callback would fail to communicate a threat to the developer and would let the attacker bypass authorization, even with an `@attacker.com` address. This vulnerability has been patched in `v4.10.3` and `v3.29.10` by normalizing the email value that is sent to the sign-in endpoint before accessing it anywhere else. We also added a `normalizeIdentifier` callback on the `EmailProvider` configuration, where you can further tweak your requirements for what your system considers a valid e-mail address. (E.g.: strict RFC2821 compliance). Users are advised to upgrade. There are no known workarounds for this vulnerability. If for some reason you cannot upgrade, you can normalize the incoming request using Advanced Initialization.
Timeline
ID reserved
By GitHub_M
- 18 days later
· 18 days later
Published
- 3 years later
· 3 years later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| GitHub_MCNA (assigner) | 3.1 | Critical9.1 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N |
| NVDNVD · Modified | 3.1 | Critical9.1 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N |
- EPSS (exploitation in 30 days)
- 1.5% · top 26% of all CVEs (7 Nov 2026)
- CISA SSVC
- Exploitation: none · Automatable: yes · Technical impact: total
The list uses the assigner's score when there is one, then CISA's, then NVD's: Critical 9.1.
Weakness
Affected products
- affected >= 4.0.0, < 4.10.3
- affected < 3.29.10
Affected packages
From reviewed advisories of the GitHub Advisory Database.
- npmnext-authGHSA-xv97-c62v-4587 (opens in a new tab)
References (8)
- https://next-auth.js.org/configuration/initialization#advanced-initialization (opens in a new tab)x_refsource_MISCx_transferred
- https://github.com/nextauthjs/next-auth/security/advisories/GHSA-xv97-c62v-4587 (opens in a new tab)x_refsource_CONFIRMx_transferred
- https://github.com/nextauthjs/next-auth/commit/afb1fcdae3cc30445038ef588e491d139b916003 (opens in a new tab)x_refsource_MISCx_transferred
- https://en.wikipedia.org/wiki/Email_address#Local-part (opens in a new tab)x_refsource_MISCx_transferred
- https://next-auth.js.org/configuration/callbacks#sign-in-callback (opens in a new tab)x_refsource_MISCx_transferred
- https://next-auth.js.org/providers/email (opens in a new tab)x_refsource_MISCx_transferred
- https://next-auth.js.org/providers/email#normalizing-the-e-mail-address (opens in a new tab)x_refsource_MISCx_transferred
- https://nodemailer.com/message/addresses (opens in a new tab)x_refsource_MISCx_transferred
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisory GHSA-xv97-c62v-4587 (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://trackcve.app/cve/CVE-2022-35924)Record last updated .