{"url":"http://public2.vulnerablecode.io/api/vulnerabilities/25329?format=json","vulnerability_id":"VCID-28bf-gpk3-xbh8","summary":"Next.js may leak x-middleware-subrequest-id to external hosts\n## Summary\nIn the process of remediating [CVE-2025-29927](https://github.com/advisories/GHSA-f82v-jwr5-mffw), we looked at other possible exploits of Middleware. We independently verified this low severity vulnerability in parallel with two reports from independent researchers.\n\nLearn more [here](https://vercel.com/changelog/cve-2025-30218-5DREmEH765PoeAsrNNQj3O).\n\n## Credit\n\nThank you to Jinseo Kim [kjsman](https://hackerone.com/kjsman?type=user) and [RyotaK](https://hackerone.com/ryotak?type=user) (GMO Flatt Security Inc.) with [takumi-san.ai](https://takumi-san.ai) for the responsible disclosure. These researchers were awarded as part of our bug bounty program.","aliases":[{"alias":"CVE-2025-30218"},{"alias":"GHSA-223j-4rm8-mrmf"}],"fixed_packages":[{"url":"http://public2.vulnerablecode.io/api/packages/68569?format=json","purl":"pkg:npm/next@12.3.6","is_vulnerable":true,"affected_by_vulnerabilities":[{"vulnerability":"VCID-54qu-9bx2-9ka8"},{"vulnerability":"VCID-5kj1-stm6-8qgv"},{"vulnerability":"VCID-qz2s-22e2-ufg9"},{"vulnerability":"VCID-r4pw-m8mz-xbdq"},{"vulnerability":"VCID-sjdx-v2z6-3fcw"},{"vulnerability":"VCID-vwym-qr5h-fue8"},{"vulnerability":"VCID-xv6q-hbf8-b7b1"}],"resource_url":"http://public2.vulnerablecode.io/packages/pkg:npm/next@12.3.6"},{"url":"http://public2.vulnerablecode.io/api/packages/68571?format=json","purl":"pkg:npm/next@13.5.10","is_vulnerable":true,"affected_by_vulnerabilities":[{"vulnerability":"VCID-1qzn-gxkv-wye3"},{"vulnerability":"VCID-54qu-9bx2-9ka8"},{"vulnerability":"VCID-5kj1-stm6-8qgv"},{"vulnerability":"VCID-fpzm-tpp7-jbft"},{"vulnerability":"VCID-qz2s-22e2-ufg9"},{"vulnerability":"VCID-r4pw-m8mz-xbdq"},{"vulnerability":"VCID-sjdx-v2z6-3fcw"},{"vulnerability":"VCID-ub68-nqch-bkdm"},{"vulnerability":"VCID-vwym-qr5h-fue8"},{"vulnerability":"VCID-w35n-bwuy-5kce"},{"vulnerability":"VCID-xv6q-hbf8-b7b1"}],"resource_url":"http://public2.vulnerablecode.io/packages/pkg:npm/next@13.5.10"},{"url":"http://public2.vulnerablecode.io/api/packages/68573?format=json","purl":"pkg:npm/next@14.2.26","is_vulnerable":true,"affected_by_vulnerabilities":[{"vulnerability":"VCID-1qzn-gxkv-wye3"},{"vulnerability":"VCID-54qu-9bx2-9ka8"},{"vulnerability":"VCID-5kj1-stm6-8qgv"},{"vulnerability":"VCID-fpzm-tpp7-jbft"},{"vulnerability":"VCID-qz2s-22e2-ufg9"},{"vulnerability":"VCID-r4pw-m8mz-xbdq"},{"vulnerability":"VCID-sjdx-v2z6-3fcw"},{"vulnerability":"VCID-ub68-nqch-bkdm"},{"vulnerability":"VCID-w35n-bwuy-5kce"},{"vulnerability":"VCID-xv6q-hbf8-b7b1"}],"resource_url":"http://public2.vulnerablecode.io/packages/pkg:npm/next@14.2.26"},{"url":"http://public2.vulnerablecode.io/api/packages/68575?format=json","purl":"pkg:npm/next@15.2.4","is_vulnerable":true,"affected_by_vulnerabilities":[{"vulnerability":"VCID-1qzn-gxkv-wye3"},{"vulnerability":"VCID-2tah-y5sg-hugp"},{"vulnerability":"VCID-3m4d-v2y1-5ua4"},{"vulnerability":"VCID-54qu-9bx2-9ka8"},{"vulnerability":"VCID-5kj1-stm6-8qgv"},{"vulnerability":"VCID-pqwe-3ukm-dkh4"},{"vulnerability":"VCID-qz2s-22e2-ufg9"},{"vulnerability":"VCID-r4pw-m8mz-xbdq"},{"vulnerability":"VCID-sjdx-v2z6-3fcw"},{"vulnerability":"VCID-w35n-bwuy-5kce"},{"vulnerability":"VCID-xv6q-hbf8-b7b1"}],"resource_url":"http://public2.vulnerablecode.io/packages/pkg:npm/next@15.2.4"}],"affected_packages":[{"url":"http://public2.vulnerablecode.io/api/packages/68568?format=json","purl":"pkg:npm/next@12.3.5","is_vulnerable":true,"affected_by_vulnerabilities":[{"vulnerability":"VCID-28bf-gpk3-xbh8"},{"vulnerability":"VCID-54qu-9bx2-9ka8"},{"vulnerability":"VCID-5kj1-stm6-8qgv"},{"vulnerability":"VCID-qz2s-22e2-ufg9"},{"vulnerability":"VCID-r4pw-m8mz-xbdq"},{"vulnerability":"VCID-sjdx-v2z6-3fcw"},{"vulnerability":"VCID-vwym-qr5h-fue8"},{"vulnerability":"VCID-xv6q-hbf8-b7b1"}],"resource_url":"http://public2.vulnerablecode.io/packages/pkg:npm/next@12.3.5"},{"url":"http://public2.vulnerablecode.io/api/packages/68570?format=json","purl":"pkg:npm/next@13.5.9","is_vulnerable":true,"affected_by_vulnerabilities":[{"vulnerability":"VCID-1qzn-gxkv-wye3"},{"vulnerability":"VCID-28bf-gpk3-xbh8"},{"vulnerability":"VCID-54qu-9bx2-9ka8"},{"vulnerability":"VCID-5kj1-stm6-8qgv"},{"vulnerability":"VCID-fpzm-tpp7-jbft"},{"vulnerability":"VCID-qz2s-22e2-ufg9"},{"vulnerability":"VCID-r4pw-m8mz-xbdq"},{"vulnerability":"VCID-sjdx-v2z6-3fcw"},{"vulnerability":"VCID-ub68-nqch-bkdm"},{"vulnerability":"VCID-vwym-qr5h-fue8"},{"vulnerability":"VCID-w35n-bwuy-5kce"},{"vulnerability":"VCID-xv6q-hbf8-b7b1"}],"resource_url":"http://public2.vulnerablecode.io/packages/pkg:npm/next@13.5.9"},{"url":"http://public2.vulnerablecode.io/api/packages/68572?format=json","purl":"pkg:npm/next@14.2.25","is_vulnerable":true,"affected_by_vulnerabilities":[{"vulnerability":"VCID-1qzn-gxkv-wye3"},{"vulnerability":"VCID-28bf-gpk3-xbh8"},{"vulnerability":"VCID-54qu-9bx2-9ka8"},{"vulnerability":"VCID-5kj1-stm6-8qgv"},{"vulnerability":"VCID-fpzm-tpp7-jbft"},{"vulnerability":"VCID-qz2s-22e2-ufg9"},{"vulnerability":"VCID-r4pw-m8mz-xbdq"},{"vulnerability":"VCID-sjdx-v2z6-3fcw"},{"vulnerability":"VCID-ub68-nqch-bkdm"},{"vulnerability":"VCID-w35n-bwuy-5kce"},{"vulnerability":"VCID-xv6q-hbf8-b7b1"}],"resource_url":"http://public2.vulnerablecode.io/packages/pkg:npm/next@14.2.25"},{"url":"http://public2.vulnerablecode.io/api/packages/68574?format=json","purl":"pkg:npm/next@15.2.3","is_vulnerable":true,"affected_by_vulnerabilities":[{"vulnerability":"VCID-1qzn-gxkv-wye3"},{"vulnerability":"VCID-28bf-gpk3-xbh8"},{"vulnerability":"VCID-2tah-y5sg-hugp"},{"vulnerability":"VCID-3m4d-v2y1-5ua4"},{"vulnerability":"VCID-54qu-9bx2-9ka8"},{"vulnerability":"VCID-5kj1-stm6-8qgv"},{"vulnerability":"VCID-pqwe-3ukm-d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