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CVE-2026-100409

CVE-2026-100409 · OpenNext Cloudflare: Cache interception can bypass middleware protection for encoded paths

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OpenNext Cloudflare is an open Next.js adapter for Cloudflare. From 0.3.0 until 1.20.2, applications that enable enableCacheInterception, rely on middleware for access control, and have a matching cached protected route process encoded pathnames inconsistently between middleware matching and cache lookup. An unauthenticated attacker can use a percent-encoded pathname that does not match authorization middleware but decodes to the cache key of a protected route, causing cached content to be returned without authorization. Malformed encodings can also be partially decoded, allowing cache lookup to continue with a pathname that middleware did not evaluate consistently. This issue is fixed in version 1.20.2.

CVSS 7.5 · Hoch · EPSS 0,3% · Korrektur verfügbar

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Technologie-Stack: node

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