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GHSA-3w37-wq28-93x7
nextPending use cache fills are shared across requests for the same key without distinguishing Draft Mode requests from regular requests. When two such requests overlap, the second request receives the first request's fill:
- A regular request that overlaps an editor's Draft Mode request receives unpublished content, without any authentication.
- A Draft Mode request that overlaps a regular request receives published content instead of the draft.
If the overlapping regular request prerenders a page — for example an on-demand prerender of a route that was not prerendered at build time — the unpublished content can be persisted into the generated page and served to all later visitors of that route until the page is revalidated. Since cached functions can be shared across routes, the poisoned page does not need to be the page the editor is previewing.
Sites are affected if they enable Cache Components (or experimental.useCache) and serve Draft Mode previews whose cached functions return draft-dependent content.
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The vulnerability can be exploited over the network without needing physical access. It is difficult for an attacker to exploit this vulnerability and may require special conditions. An attacker does not need any special privileges or access rights. The attacker needs the user to perform some action, like clicking a link. The impact is confined to the system where the vulnerability exists. There is a low impact on the confidentiality of the information. There is a low impact on the integrity of the data.
Limited exploitation activity has been observed. Close monitoring and planned remediation are recommended.
The exploit probability is very low. The vulnerability is unlikely 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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