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Update dependency next to v15.5.28 [SECURITY] - #592
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This PR contains the following updates:
15.5.24→15.5.28Warning
Some dependencies could not be looked up. Check the Dependency Dashboard for more information.
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:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:NReferences
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:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:NReferences
This data is provided by the GitHub Advisory Database (CC-BY 4.0).
Next.js: Denial of Service in App Router using Server Actions
CVE-2026-94482 / GHSA-p3m5-59mp-jv5r
More information
Details
Impact
Crafted requests targeting Next.js applications using App Router with at least one Server Action can lead to excessive CPU usage blocking processing of further requests in the same process.
Workarounds
No workaround exists besides upgrading. Applications using Pages Router or not using Server Actions are not vulnerable.
Severity
CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:NReferences
This data is provided by the GitHub Advisory Database (CC-BY 4.0).
Next.js: Unauthenticated Remote Code Execution in Image Optimization API when SVG files are used
GHSA-2464-fhr4-w9xw
More information
Details
Impact
A memory-related vulnerability has been discovered in an upstream library used for Image Optimization can lead to possible remote code execution (RCE) when Next.js runs on glibc-based Linux.
Workaround
Ensure the version of
sharpused by Next.js is greater than or equal to0.35.5. Fresh installs automatically get a fixed version ofsharp.Upgrading Next.js to the patched versions will ensure package managers automatically provide a fixed version of
sharpto Next.js.Severity
CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:HReferences
This data is provided by the GitHub Advisory Database (CC-BY 4.0).
Release Notes
vercel/next.js (next)
v15.5.28Compare Source
This release contains security fixes for the following advisories:
Critical:
High:
v15.5.27Compare Source
This release contains security fixes for the following advisories:
Medium:
v15.5.26Compare Source
This release contains additional security hardening for
next/og. For more information, check out https://nextjs.org/blog/nextjs-security-update-september-22-2026v15.5.25Compare Source
Follow-up release to v15.5.24 re-enabling AVIF Image Optimization when newer versions of
sharpare installed (#97954).Configuration
📅 Schedule: (UTC)
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♻ Rebasing: Whenever PR is behind base branch, or you tick the rebase/retry checkbox.
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