CVE-2026-40299

A flaw was found in next-intl, a library for internationalization in Next.js applications. A remote attacker could exploit this vulnerability in applications using the next-intl middleware with localePrefix: 'as-needed'. By crafting specific URLs, the attacker could cause the middleware to redire...

CVE-2026-40299

next-intl provides internationalization for Next.js. Applications using the next-intl middleware prior to version 4.9.1with localePrefix: 'as-needed' could construct URLs where path handling and the WHATWG URL parser resolved a relative redirect target to another host e.g. scheme-relative // or...

@0xchain/empty (>=0.0.1, <=1.1.0-beta.4), @0xchain/expandable-text (>=0.0.1, <=1.1.0-beta.18) +16 more potentially affected by CVE-2026-40299 via next-intl (>=4.0.2, <=4.9.0)

next-intl NPM version =4.0.2, =0.0.1, =0.0.1, =0.0.1, =0.0.1, =0.0.1, =0.0.1, =0.0.1, =0.0.1, =0.0.1, =0.0.1, =0.0.1, =3.8.0, =1.28.0, =2.11.31, =0.0.3, =0.0.28 and more Source cves: CVE-2026-40299 Source advisory: SNYK:JS-NEXTINTL-15995498...

@0xchain/empty (>=0.0.1, <=1.1.0-beta.4), @0xchain/expandable-text (>=0.0.1, <=1.1.0-beta.18) +16 more potentially affected by CVE-2026-40299 via next-intl (>=4.0.2, <=4.9.0)

next-intl NPM version =4.0.2, =0.0.1, =0.0.1, =0.0.1, =0.0.1, =0.0.1, =0.0.1, =0.0.1, =0.0.1, =0.0.1, =0.0.1, =0.0.1, =3.8.0, =1.28.0, =2.11.31, =0.0.3, =0.0.28 and more Source cves: CVE-2026-40299 Source advisory: OSV:GHSA-8F24-V5VV-GM5J...