CVE-2025-32421
Next.js Race Condition to Cache Poisoning
3.7
LOW
CVSS 3.1
EPSS 0.75%
Description
**Summary** We received a responsible disclosure from Allam Rachid (zhero) for a low-severity race-condition vulnerability in Next.js. This issue only affects the **Pages Router** under certain misconfigurations, causing normal endpoints to serve `pageProps` data instead of standard HTML. [Learn more here](https://vercel.com/changelog/cve-2025-32421) **Credit** Thank you to **Allam Rachid (zhero)** for the responsible disclosure. This research was rewarded as part of our bug bounty program.
How to fix CVE-2025-32421
To remediate CVE-2025-32421, upgrade the affected package to a fixed version below.
- —upgrade to 14.2.24 or later
Is CVE-2025-32421 being exploited?
Low — EPSS is 0.8%, meaning exploitation activity has not been observed at scale.
Affected packages (1)
- >= 0.9.9, < 14.2.24
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | LOW3.7 | CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N |