GHSA-3w37-wq28-93x7

Suggest an improvement
Source
https://github.com/advisories/GHSA-3w37-wq28-93x7
Import Source
https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/10/GHSA-3w37-wq28-93x7/GHSA-3w37-wq28-93x7.json
JSON Data
https://api.osv.dev/v1/vulns/GHSA-3w37-wq28-93x7
Aliases
Published
2026-10-07T20:32:13Z
Modified
2026-10-07T20:45:06Z
Severity
  • 4.2 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:N CVSS Calculator
  • 6.3 (Medium) CVSS_V4 - CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N CVSS Calculator
Summary
Next.js: Pending `use cache` fill can leak Draft Mode content into regular responses and persisted pages
Details

Pending 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  • A regular request that overlaps an editor's Draft Mode request receives unpublished content, without any authentication.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request prerenders a page — for example an on-demand prerender of a route that was not prerendered at build time — the unpublished content can be persisted into the generated page and served to all later visitors of that route until the page is revalidated.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.

Database specific
{
    "cwe_ids": [
        "CWE-524"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2026-10-07T20:32:13Z",
    "nvd_published_at": "2026-10-02T16:16:52Z",
    "severity": "MODERATE"
}
References

Affected packages

npm / next

Package

Affected ranges

Type
SEMVER
Events
Introduced
16.3.0
Fixed
16.3.8

Database specific

source
"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/10/GHSA-3w37-wq28-93x7/GHSA-3w37-wq28-93x7.json"