High [CVE-2026-64645] Server-Side Request Forgery vulnerability
This high-severity Red Hat Linux advisory covers CVE-2026-64645 affecting Streams for Apache Kafka 3.2.1, Red Hat Enterprise Linux AI (RHEL AI) 3, streams for Apache Kafka 2.
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Summary
Next.js is a React framework for building full-stack web applications. In versions 12.0.0 through 15.5.20 and 16.0.0 through 16.2.10, a rewrites() or redirects() rule that builds its external destination hostname from request-controlled input can be pointed at an arbitrary hostname, regardless of the rule's hostname suffix.
For a rewrite, Next.js proxies the request to that arbitrary host and serves the response from the application's origin, leading to Server-Side Request forgery. A redirects() rule configured this way is vulnerable to an Open Redirect.
This issue has been fixed in versions 15.5.21 and 16.2.11. This vulnerability allows a remote attacker to perform Server-Side Request Forgery (SSRF) or Open Redirect attacks.
Additionally, this misconfiguration can result in Open Redirects, potentially exposing users to phishing. This Important vulnerability in Next.js applications arises when `rewrites()` or `redirects()` rules construct external destination hostnames from untrusted input.
The impact is contingent on the application's specific routing configuration. Red Hat severity: Important — CVSS 8.2 (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:N).
Weakness: CWE-918. Affected Red Hat products: Streams for Apache Kafka 3.2.1; Red Hat Enterprise Linux AI (RHEL AI) 3; streams for Apache Kafka 2.
- 12.0.0
- 15.5.20
- 16.0.0
- 16.2.10
Official advisory · high-confidence parse· fetched 27 days ago·verify at source
- 15.5.21
- 16.2.11
- next
- RHSA-2026:54435
Official advisory · high-confidence parse· fetched 27 days ago·verify at source
Mitigation
Upgrade to a fixed release: 15.5.21, 16.2.11, next, RHSA-2026:54435. That is the remediation for this advisory.
The vendor advisory may list interim mitigations or workarounds not captured here. Review it before change work.
Official advisory · high-confidence parse· fetched 27 days ago·verify at source
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