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Server-Side Request Forgery (SSRF) The advisory has been revoked - it doesn't affect any version of package firefox  (opens in a new tab)

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EPSS
0.87% (57th percentile)

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  • Snyk IDSNYK-RHEL10-FIREFOX-18378923
  • published29 Jul 2026
  • disclosed27 Jul 2026
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Introduced: 27 Jul 2026

NewCVE-2026-64649  (opens in a new tab)
CWE-918  (opens in a new tab)

Amendment

The Red Hat security team deemed this advisory irrelevant for RHEL:10.

NVD Description

Note: Versions mentioned in the description apply only to the upstream firefox package and not the firefox package as distributed by RHEL.

Next.js is a React framework for building full-stack web applications. In versions 14.1.1 through 15.5.20 and 16.0.0 through 16.2.10, when a Server Action forwards or redirects a request, an attacker can cause the server to send that outbound request to a malicious host (Server-Side Request Forgery). This requires the attacker's request to control Host-associated headers. In some configurations, it's also possible to obtain internal values that weaken middleware/proxy authorization. Applications that use Server Actions are affected when the incoming host header is not fixed to a trusted value. This typically occurs on custom servers, or on deployments not behind a proxy that pins the host. Managed hosting pins the host upstream and is not affected; next start and standalone output do the same from version 14.2 onward. This issue has been fixed in versions 15.5.21 and 16.2.11.