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Update dependency next to v15.5.27 [SECURITY] - #1003

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@renovate renovate Bot commented Oct 16, 2026

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This PR contains the following updates:

Package Change Age Confidence
next (source) 15.5.26 → 15.5.27 age confidence

Next.js has cache poisoning of SSG and ISR pages in self-hosted applications

CVE-2026-94543 / GHSA-4jqv-mc3x-m676

More information

Details

Self-hosted Next.js applications that use the Pages Router with statically generated (SSG) or incrementally regenerated (ISR) pages can have a page's cache entry replaced with content from a different route, causing the affected page to serve wrong content to every visitor until the entry is revalidated. Applications deployed on Vercel are not affected.

Severity

  • CVSS Score: 6.3 / 10 (Medium)
  • Vector String: CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N

References

This data is provided by the GitHub Advisory Database (CC-BY 4.0).


Next.js has cache poisoning in SSG/ISR rendering that leads to cross-user content substitution and persistent denial of service

CVE-2026-94484 / GHSA-mcj8-r9mp-w47p

More information

Details

Next.js applications that use a root-level catch-all page together with statically generated or Incremental Static Regeneration routes can have their shared response cache poisoned by a single unauthenticated crafted request.

Severity

  • CVSS Score: 6.3 / 10 (Medium)
  • Vector String: CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N

References

This data is provided by the GitHub Advisory Database (CC-BY 4.0).


Release Notes

vercel/next.js (next)

v15.5.27

Compare Source

This release contains security fixes for the following advisories:

Medium:


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Coverage Report

Status Category Percentage Covered / Total
🔵 Lines 1.32% 135 / 10211
🔵 Statements 1.32% 135 / 10211
🔵 Functions 48.81% 103 / 211
🔵 Branches 51.78% 116 / 224
File CoverageNo changed files found.
Generated in workflow #2897 for commit 13afc77 by the Vitest Coverage Report Action

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