next.js - Cache Poisoning (CVE-2024-46982)
4Exploiting IPs reported
Next.js is a React framework for building full-stack web applications. By sending a crafted HTTP request, it is possible to poison the cache of a non-dynamic server-side rendered route in the pages router (this does not affect the app router). When this crafted request is sent it could coerce Next.js to cache a route that is meant to not be cached and send a `Cache-Control: s-maxage=1, stale-while-revalidate` header which some upstream CDNs may cache as well. To be potentially affected all of the following must apply: 1. Next.js between 13.5.1 and 14.2.9, 2. Using pages router, & 3. Using non-dynamic server-side rendered routes e.g. `pages/dashboard.tsx` not `pages/blog/[slug].tsx`. This vulnerability was resolved in Next.js v13.5.7, v14.2.10, and later. We recommend upgrading regardless of whether you can reproduce the issue or not. There are no official or recommended workarounds for this issue, we recommend that users patch to a safe version.
CrowdSec analysis
CVE-2024-46982 is a vulnerability in Next.js that allows cache poisoning of certain server-side rendered routes. By sending a specially crafted HTTP request, attackers can coerce affected configurations to improperly cache responses, potentially serving cached data to unintended users or through upstream CDNs.
CrowdSec has been tracking this vulnerability and its exploits since 10th of March 2025.
Based on data from the CrowdSec network, nearly all observed exploitation of CVE-2024-46982 is fully opportunistic, with attackers indiscriminately scanning the entire internet. These attacks are automated and lack any form of target selection or reconnaissance. Data from the CrowdSec community also indicates a gradual decrease in attacks targeting CVE-2024-46982. While still present in the wild, exploitation levels have dropped noticeably week-over-week. This may signal that the vulnerability is becoming less relevant or that defenses are improving fast enough for attackers to lose interest.
Exploitation attempts, when detected, will typically target URLs containing the ?__nextdatareq=1 pattern.
Exploitation
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Common Weakness Enumeration (CWE)
Protection
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Blocklist
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