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Vulnerabilities

Security incident · CVE-2026-94544

Pending fill can leak Draft Mode content into regular responses and persisted pages

Published Sep 30, 2026 · catalog updated Sep 30, 2026 · Pending fill can leak

Last checked Nov 5, 2026. A connected source was read within the last 7 days.

Check if you run it

No confirmed exploitation is on record for CVE-2026-94544. EPSS is 0.18%. Act only if a listed version of Pending fill can leak is installed.

Gaps on this record

  • The stored product name is a package slug. The name on this page is taken from the title (Pending fill can leak).
  • No vendor fix or required action is stored. Compare the linked advisory before you change production.
Severity
Medium—
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
0.18%
Remediation
Not established
Affected products
npm next

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request receives the first request's fill: - A regular request that overlaps an editor's Draft Mode request receives unpublished content, without any authentication.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request prerenders a page — for example an on-demand prerender of a route that was not prerendered at build time — the unpublished content can be persisted into the generated page and served to all later visitors of that route until the page is revalidated.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

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • npm next16.3.0

How to fix CVE-2026-94544

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

No confirmed exploitation is on record for CVE-2026-94544. EPSS is 0.18%. Act only if a listed version of Pending fill can leak is installed.

Which versions are affected?

Compare what you have installed with 16.3.0. Compare the installed version with the linked vendor advisory before you change production.

What should an analyst verify?

No weakness class is stored. EPSS 0.18%. There is no CISA KEV listing. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Technology hubs

Next.js security

Code

The project this record applies to. Exploit listings stay in References.

Timeline

Detection, updates, and resolution for this record.

  1. Sep 30, 2026 · Maintainer security tabs

    Detected

    Pending 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 pub

Sources

  • CVE.orgVulnerability recordCVE-2026-94544

    Official CVE identifier

    cve.org
  • Maintainer security tabsVendor advisoryGHSA-3w37-wq28-93x7

    Pending 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 pub

    github.com

Freshness

Last verified in this catalog Nov 5, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.

  • CVE.orgNov 4, 2026
  • Maintainer security tabsNov 2, 2026