{"id":"EUVD-2026-102200","enisaUuid":"7d803f3b-27dd-3054-b05b-cab1b5233834","description":"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.","datePublished":"Oct 15, 2026, 4:57:50 PM","dateUpdated":"Oct 15, 2026, 5:50:33 PM","baseScore":7.5,"baseScoreVersion":"3.1","baseScoreVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N","references":"https://github.com/opennextjs/opennextjs-cloudflare/security/advisories/GHSA-2vc4-c4r6-p6v6\nhttps://github.com/opennextjs/opennextjs-aws/pull/1199\nhttps://github.com/opennextjs/opennextjs-aws/pull/1200\nhttps://github.com/opennextjs/opennextjs-cloudflare/commit/38ea40b669be272ddf09a7df7e70c69d0b57404b\nhttps://github.com/opennextjs/opennextjs-cloudflare/releases/tag/@opennextjs/cloudflare@1.20.2\n","aliases":"CVE-2026-100409\nGHSA-2vc4-c4r6-p6v6\n","assigner":"GitHub_M","epss":0.31,"enisaIdProduct":[{"id":"aab77668-333f-349b-a829-ea2cfaa14bad","product":{"name":"opennextjs-cloudflare","vendor":{"name":"opennextjs"}},"product_version":"0.3.0, \u003c 1.20.2"}],"enisaIdVendor":[{"id":"c409a1e4-5d3c-31ae-9b5f-2f62e2df816f","vendor":{"name":"opennextjs"}}],"enisaIdVulnerability":[{"id":"53d082ce-c7a1-3429-812e-ab53ca8ac42a","vulnerability":{"id":"GHSA-2vc4-c4r6-p6v6","description":"OpenNext Cloudflare: Cache interception can bypass middleware protection for encoded paths","datePublished":"Oct 15, 2026, 8:15:17 PM","dateUpdated":"Oct 15, 2026, 8:15:17 PM","baseScore":0.0,"references":"https://github.com/opennextjs/opennextjs-cloudflare/security/advisories/GHSA-2vc4-c4r6-p6v6\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-100409\nhttps://github.com/opennextjs/opennextjs-aws/pull/1199\nhttps://github.com/opennextjs/opennextjs-aws/pull/1200\nhttps://github.com/opennextjs/opennextjs-cloudflare/commit/38ea40b669be272ddf09a7df7e70c69d0b57404b\nhttps://github.com/opennextjs/opennextjs-cloudflare\nhttps://github.com/opennextjs/opennextjs-cloudflare/releases/tag/@opennextjs/cloudflare@1.20.2\n","enisa_id":"EUVD-2026-102200\n","aliases":"CVE-2026-100409\nGHSA-2vc4-c4r6-p6v6\n","epss":0.0,"dataProcessed":"Oct 25, 2026, 2:03:05 AM","vulnerabilityProduct":[],"vulnerabilityVendor":[]}},{"id":"626b7ce9-d4f4-3909-943f-08f92e610552","vulnerability":{"id":"CVE-2026-100409","description":"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.","datePublished":"Oct 15, 2026, 4:57:50 PM","dateUpdated":"Oct 15, 2026, 5:50:33 PM","status":"PUBLISHED","baseScore":7.5,"baseScoreVersion":"3.1","baseScoreVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N","references":"https://github.com/opennextjs/opennextjs-cloudflare/security/advisories/GHSA-2vc4-c4r6-p6v6\nhttps://github.com/opennextjs/opennextjs-aws/pull/1199\nhttps://github.com/opennextjs/opennextjs-aws/pull/1200\nhttps://github.com/opennextjs/opennextjs-cloudflare/commit/38ea40b669be272ddf09a7df7e70c69d0b57404b\nhttps://github.com/opennextjs/opennextjs-cloudflare/releases/tag/@opennextjs/cloudflare@1.20.2\n","enisa_id":"EUVD-2026-102200\n","assigner":"GitHub_M","epss":0.31,"dataProcessed":"Oct 27, 2026, 7:15:34 AM","vulnerabilityProduct":[{"id":"3046f2ec-3674-3aef-9aa0-5625323cb7bd","product":{"name":"opennextjs-cloudflare","vendor":{"name":"opennextjs"}},"product_version":"0.3.0, \u003c 1.20.2"}],"vulnerabilityVendor":[{"id":"9afca4e8-5dd7-3de0-8c45-570658549eb7","vendor":{"name":"opennextjs"}}]}}],"enisaIdAdvisory":[]}