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GHSA-gp8f-8m3g-qvj9
No affected components available
Impact
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:
- Next.js between 13.5.1 and 14.2.9
- Using pages router
- Using non-dynamic server-side rendered routes e.g.
pages/dashboard.tsxnotpages/blog/[slug].tsx
The below configurations are unaffected:
- Deployments using only app router
- Deployments on Vercel are not affected
Patches
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.
Workarounds
There are no official or recommended workarounds for this issue, we recommend that users patch to a safe version.
Credits
- Allam Rachid (zhero_)
- Henry Chen
The vulnerability can be exploited over the network without needing physical access. It is easy for an attacker to exploit this vulnerability. An attacker does not need any special privileges or access rights. No user interaction is needed for the attacker to exploit this vulnerability. The impact is confined to the system where the vulnerability exists. There is a high impact on the availability of the system.
Exploitation attempts have been detected. Elevated vigilance and prompt remediation are advised.
The exploit probability is high. The vulnerability is very likely to be exploited in the next 30 days.
We did not find any exploit available. Neither in GitHub repositories nor in the Exploit-Database.
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