{"id":"EUVD-2026-30083","enisaUuid":"c14e8da4-38a1-3d72-b81b-9b37c1d3fabe","description":"Next.js is a React framework for building full-stack web applications. From 13.4.0 to before 15.5.16 and 16.2.5, App Router applications that rely on CSP nonces can be vulnerable to stored cross-site scripting when deployed behind shared caches. In affected versions, malformed nonce values derived from request headers could be reflected into rendered HTML in an unsafe way, allowing an attacker to poison cached responses and cause script execution for later visitors. This vulnerability is fixed in 15.5.16 and 16.2.5.","datePublished":"May 13, 2026, 5:07:15 PM","dateUpdated":"May 18, 2026, 2:13:33 PM","baseScore":4.7,"baseScoreVersion":"3.1","baseScoreVector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:L/I:L/A:N","references":"https://github.com/vercel/next.js/security/advisories/GHSA-ffhc-5mcf-pf4q\n","aliases":"CVE-2026-44581\nGHSA-ffhc-5mcf-pf4q\n","assigner":"GitHub_M","epss":0.22,"enisaIdProduct":[{"id":"29e29914-377d-3bcb-8666-684b3c3a1409","product":{"name":"next.js","vendor":{"name":"vercel"}},"product_version":"13.4.0, \u003c 15.5.16"},{"id":"ebfc52ba-f330-391d-873c-551a064fb68f","product":{"name":"next.js","vendor":{"name":"vercel"}},"product_version":"16.0.0, \u003c 16.2.5"}],"enisaIdVendor":[{"id":"824d61dd-8e92-3778-a994-4510da1412b4","vendor":{"name":"vercel"}}],"enisaIdVulnerability":[{"id":"18f7a6ed-753f-3a19-80d0-535ace2dd1e3","vulnerability":{"id":"CVE-2026-44581","description":"Next.js is a React framework for building full-stack web applications. From 13.4.0 to before 15.5.16 and 16.2.5, App Router applications that rely on CSP nonces can be vulnerable to stored cross-site scripting when deployed behind shared caches. In affected versions, malformed nonce values derived from request headers could be reflected into rendered HTML in an unsafe way, allowing an attacker to poison cached responses and cause script execution for later visitors. This vulnerability is fixed in 15.5.16 and 16.2.5.","datePublished":"May 13, 2026, 5:07:15 PM","dateUpdated":"May 18, 2026, 2:13:33 PM","status":"PUBLISHED","baseScore":4.7,"baseScoreVersion":"3.1","baseScoreVector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:L/I:L/A:N","references":"https://github.com/vercel/next.js/security/advisories/GHSA-ffhc-5mcf-pf4q\n","enisa_id":"EUVD-2026-30083\n","assigner":"GitHub_M","epss":0.22,"dataProcessed":"Oct 28, 2026, 7:17:27 AM","vulnerabilityProduct":[{"id":"7d945a1a-02c6-3d51-90e7-7edeaafad247","product":{"name":"next.js","vendor":{"name":"vercel"}},"product_version":"13.4.0, \u003c 15.5.16"},{"id":"965fce49-6685-3418-bb94-391cb9b7f547","product":{"name":"next.js","vendor":{"name":"vercel"}},"product_version":"16.0.0, \u003c 16.2.5"}],"vulnerabilityVendor":[{"id":"9bf1721c-20d5-3b80-b36c-300338203852","vendor":{"name":"vercel"}}]}},{"id":"eae3b378-2429-3fd8-b930-ff460cb97fae","vulnerability":{"id":"GHSA-ffhc-5mcf-pf4q","description":"Next.js vulnerable to cross-site scripting in App Router applications using CSP nonces","datePublished":"May 11, 2026, 3:57:12 PM","dateUpdated":"May 14, 2026, 8:38:58 PM","baseScore":0.0,"references":"https://github.com/vercel/next.js/security/advisories/GHSA-ffhc-5mcf-pf4q\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-44581\nhttps://github.com/vercel/next.js\nhttps://github.com/vercel/next.js/releases/tag/v15.5.16\nhttps://github.com/vercel/next.js/releases/tag/v16.2.5\n","enisa_id":"EUVD-2026-30083\n","aliases":"CVE-2026-44581\nGHSA-ffhc-5mcf-pf4q\n","epss":0.0,"dataProcessed":"Oct 25, 2026, 1:55:50 AM","vulnerabilityProduct":[],"vulnerabilityVendor":[]}}],"enisaIdAdvisory":[{"id":"3f3934ae-3278-30fe-b956-f472b2244afe","advisory":{"id":"WID-SEC-W-2026-1401","description":"Vercel Next.js: Mehrere Schwachstellen","summary":"Ein Angreifer kann mehrere Schwachstellen in Vercel Next.js ausnutzen, um Sicherheitsvorkehrungen zu umgehen, Cross-Site-Scripting-Angriffe durchzuführen, Daten zu manipulieren, vertrauliche Informationen offenzulegen oder einen Denial-of-Service-Zustand zu verursachen.","datePublished":"May 6, 2026, 10:00:00 PM","dateUpdated":"May 13, 2026, 10:00:00 PM","baseScore":0.0,"references":"https://wid.cert-bund.de/.well-known/csaf/white/2026/wid-sec-w-2026-1401.json\nhttps://wid.cert-bund.de/portal/wid/securityadvisory?name\u003dWID-SEC-2026-1401\n","aliases":"CVE-2026-23870\nCVE-2026-44572\nCVE-2026-44573\nCVE-2026-44574\nCVE-2026-44575\nCVE-2026-44576\nCVE-2026-44577\nCVE-2026-44578\nCVE-2026-44579\nCVE-2026-44580\nCVE-2026-44581\nCVE-2026-44582\n","source":{"id":8,"name":"csaf_certbund"},"advisoryProduct":[{"id":"4e34fb10-e5d0-3e4b-8497-b7a28d0c5bdf","product":{"name":"next.js","vendor":{"name":"vercel"}}},{"id":"6eef55a1-eced-366b-8ed5-72c112ffd47b","product":{"name":"15.5.16","vendor":{"name":"vercel"}}},{"id":"83bd8c68-9fd8-3c45-b4fe-706987676131","product":{"name":"16.2.5","vendor":{"name":"vercel"}}}]}}]}