{"url":"http://public2.vulnerablecode.io/api/packages/58868?format=json","purl":"pkg:maven/org.http4s/http4s-core_2.12@0.21.27","type":"maven","namespace":"org.http4s","name":"http4s-core_2.12","version":"0.21.27","qualifiers":{},"subpath":"","is_vulnerable":true,"next_non_vulnerable_version":"0.21.34","latest_non_vulnerable_version":"1.0-2-1e49ccf","affected_by_vulnerabilities":[{"url":"http://public2.vulnerablecode.io/api/vulnerabilities/41494?format=json","vulnerability_id":"VCID-1ykn-yyp7-wbgg","summary":"Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection')\nhttp4s is an open source scala interface for HTTP. Header values (`Header.value`), Status reason phrases (`Status.reason`), URI paths (`Uri.Path`), URI authority registered names (`URI.RegName`).","references":[{"reference_url":"https://api.first.org/data/v1/epss?cve=CVE-2021-41084","reference_id":"","reference_type":"","scores":[{"value":"0.00451","scoring_system":"epss","scoring_elements":"0.64028","published_at":"2026-06-04T12:55:00Z"},{"value":"0.00451","scoring_system":"epss","scoring_elements":"0.6407","published_at":"2026-06-05T12:55:00Z"}],"url":"https://api.first.org/data/v1/epss?cve=CVE-2021-41084"},{"reference_url":"https://github.com/http4s/http4s","reference_id":"","reference_type":"","scores":[{"value":"8.7","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:N"},{"value":"HIGH","scoring_system":"generic_textual","scoring_elements":""}],"url":"https://github.com/http4s/http4s"},{"reference_url":"https://github.com/http4s/http4s/commit/d02007db1da4f8f3df2dbf11f1db9ac7afc3f9d8","reference_id":"","reference_type":"","scores":[{"value":"8.7","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:N"},{"value":"HIGH","scoring_system":"generic_textual","scoring_elements":""}],"url":"https://github.com/http4s/http4s/commit/d02007db1da4f8f3df2dbf11f1db9ac7afc3f9d8"},{"reference_url":"https://httpwg.org/http-core/draft-ietf-httpbis-semantics-latest.html#fields.values","reference_id":"","reference_type":"","scores":[{"value":"8.7","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:N"},{"value":"HIGH","scoring_system":"generic_textual","scoring_elements":""}],"url":"https://httpwg.org/http-core/draft-ietf-httpbis-semantics-latest.html#fields.values"},{"reference_url":"https://owasp.org/www-community/attacks/HTTP_Response_Splitting","reference_id":"","reference_type":"","scores":[{"value":"8.7","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:N"},{"value":"HIGH","scoring_system":"generic_textual","scoring_elements":""}],"url":"https://owasp.org/www-community/attacks/HTTP_Response_Splitting"},{"reference_url":"https://nvd.nist.gov/vuln/detail/CVE-2021-41084","reference_id":"CVE-2021-41084","reference_type":"","scores":[{"value":"8.7","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:N"},{"value":"HIGH","scoring_system":"generic_textual","scoring_elements":""}],"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-41084"},{"reference_url":"https://github.com/advisories/GHSA-5vcm-3xc3-w7x3","reference_id":"GHSA-5vcm-3xc3-w7x3","reference_type":"","scores":[],"url":"https://github.com/advisories/GHSA-5vcm-3xc3-w7x3"},{"reference_url":"https://github.com/http4s/http4s/security/advisories/GHSA-5vcm-3xc3-w7x3","reference_id":"GHSA-5vcm-3xc3-w7x3","reference_type":"","scores":[{"value":"8.7","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:N"},{"value":"HIGH","scoring_system":"generic_textual","scoring_elements":""}],"url":"https://github.com/http4s/http4s/security/advisories/GHSA-5vcm-3xc3-w7x3"}],"fixed_packages":[{"url":"http://public2.vulnerablecode.io/api/packages/59058?format=json","purl":"pkg:maven/org.http4s/http4s-core_2.12@0.21.29","is_vulnerable":true,"affected_by_vulnerabilities":[{"vulnerability":"VCID-ecme-hxe7-q7d8"}],"resource_url":"http://public2.vulnerablecode.io/packages/pkg:maven/org.http4s/http4s-core_2.12@0.21.29"},{"url":"http://public2.vulnerablecode.io/api/packages/59059?format=json","purl":"pkg:maven/org.http4s/http4s-core_2.12@0.22.5","is_vulnerable":true,"affected_by_vulnerabilities":[{"vulnerability":"VCID-ecme-hxe7-q7d8"},{"vulnerability":"VCID-zpsp-jh45-7ygv"}],"resource_url":"http://public2.vulnerablecode.io/packages/pkg:maven/org.http4s/http4s-core_2.12@0.22.5"},{"url":"http://public2.vulnerablecode.io/api/packages/59060?format=json","purl":"pkg:maven/org.http4s/http4s-core_2.12@0.23.4","is_vulnerable":true,"affected_by_vulnerabilities":[{"vulnerability":"VCID-ecme-hxe7-q7d8"}],"resource_url":"http://public2.vulnerablecode.io/packages/pkg:maven/org.http4s/http4s-core_2.12@0.23.4"},{"url":"http://public2.vulnerablecode.io/api/packages/58871?format=json","purl":"pkg:maven/org.http4s/http4s-core_2.12@1.0-2-1e49ccf","is_vulnerable":false,"affected_by_vulnerabilities":[],"resource_url":"http://public2.vulnerablecode.io/packages/pkg:maven/org.http4s/http4s-core_2.12@1.0-2-1e49ccf"}],"aliases":["CVE-2021-41084","GHSA-5vcm-3xc3-w7x3"],"risk_score":4.0,"exploitability":"0.5","weighted_severity":"8.0","resource_url":"http://public2.vulnerablecode.io/vulnerabilities/VCID-1ykn-yyp7-wbgg"},{"url":"http://public2.vulnerablecode.io/api/vulnerabilities/106017?format=json","vulnerability_id":"VCID-ecme-hxe7-q7d8","summary":"Http4s improperly parses User-Agent and Server headers\n### Impact\n\nThe `User-Agent` and `Server` header parsers are susceptible to a fatal error on certain inputs.  In http4s, modeled headers are lazily parsed, so this only applies to services that explicitly request these typed headers. \n\n#### v0.21.x\n\n```scala\nval unsafe: Option[`User-Agent`] = req.headers.get(`User-Agent`)\n```\n\n#### v0.22.x, v0.23.x, v1.x\n\n```scala\nval unsafe: Option[`User-Agent`] = req.headers.get[`User-Agent`]\nval alsoUnsafe: Option[`Server`] = req.headers.get[Server]\n```\n\n### Patches\n\nFixes are released in 0.21.34, 0.22.15, 0.23.17, and 1.0.0-M38.\n\n### Workarounds\n\n#### Use the weakly typed header interface\n\n##### v0.21.x\n\n```scala\nval safe: Option[Header] = req.headers.get(\"User-Agent\".ci)\n// but don't do this\nval unsafe = header.map(_.parsed) \n```\n\n##### v0.22.x, v0.23.x, v1.x\n\n```scala\nval safe: Option[Header] = req.headers.get(ci\"User-Agent\")\n```","references":[{"reference_url":"https://api.first.org/data/v1/epss?cve=CVE-2023-22465","reference_id":"","reference_type":"","scores":[{"value":"0.00335","scoring_system":"epss","scoring_elements":"0.5657","published_at":"2026-06-04T12:55:00Z"},{"value":"0.00335","scoring_system":"epss","scoring_elements":"0.56623","published_at":"2026-06-05T12:55:00Z"}],"url":"https://api.first.org/data/v1/epss?cve=CVE-2023-22465"},{"reference_url":"https://github.com/http4s/http4s","reference_id":"","reference_type":"","scores":[{"value":"7.5","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"},{"value":"HIGH","scoring_system":"generic_textual","scoring_elements":""}],"url":"https://github.com/http4s/http4s"},{"reference_url":"https://github.com/http4s/http4s/security/advisories/GHSA-54w6-vxfh-fw7f","reference_id":"","reference_type":"","scores":[{"value":"7.5","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"},{"value":"HIGH","scoring_system":"generic_textual","scoring_elements":""},{"value":"Track","scoring_system":"ssvc","scoring_elements":"SSVCv2/E:P/A:Y/T:P/P:M/B:A/M:M/D:T/2025-03-10T21:02:19Z/"}],"url":"https://github.com/http4s/http4s/security/advisories/GHSA-54w6-vxfh-fw7f"},{"reference_url":"https://nvd.nist.gov/vuln/detail/CVE-2023-22465","reference_id":"","reference_type":"","scores":[{"value":"7.5","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"},{"value":"HIGH","scoring_system":"generic_textual","scoring_elements":""}],"url":"https://nvd.nist.gov/vuln/detail/CVE-2023-22465"},{"reference_url":"https://github.com/advisories/GHSA-54w6-vxfh-fw7f","reference_id":"GHSA-54w6-vxfh-fw7f","reference_type":"","scores":[],"url":"https://github.com/advisories/GHSA-54w6-vxfh-fw7f"}],"fixed_packages":[{"url":"http://public2.vulnerablecode.io/api/packages/135737?format=json","purl":"pkg:maven/org.http4s/http4s-core_2.12@0.21.34","is_vulnerable":false,"affected_by_vulnerabilities":[],"resource_url":"http://public2.vulnerablecode.io/packages/pkg:maven/org.http4s/http4s-core_2.12@0.21.34"},{"url":"http://public2.vulnerablecode.io/api/packages/135738?format=json","purl":"pkg:maven/org.http4s/http4s-core_2.12@0.22.15","is_vulnerable":true,"affected_by_vulnerabilities":[{"vulnerability":"VCID-zpsp-jh45-7ygv"}],"resource_url":"http://public2.vulnerablecode.io/packages/pkg:maven/org.http4s/http4s-core_2.12@0.22.15"},{"url":"http://public2.vulnerablecode.io/api/packages/135739?format=json","purl":"pkg:maven/org.http4s/http4s-core_2.12@0.23.17","is_vulnerable":false,"affected_by_vulnerabilities":[],"resource_url":"http://public2.vulnerablecode.io/packages/pkg:maven/org.http4s/http4s-core_2.12@0.23.17"}],"aliases":["CVE-2023-22465","GHSA-54w6-vxfh-fw7f"],"risk_score":4.0,"exploitability":"0.5","weighted_severity":"8.0","resource_url":"http://public2.vulnerablecode.io/vulnerabilities/VCID-ecme-hxe7-q7d8"}],"fixing_vulnerabilities":[{"url":"http://public2.vulnerablecode.io/api/vulnerabilities/41404?format=json","vulnerability_id":"VCID-83r2-kxmr-zucc","summary":"Origin Validation Error\nThe original `CORS` implementation and `CORSConfig` are deprecated.","references":[{"reference_url":"https://api.first.org/data/v1/epss?cve=CVE-2021-39185","reference_id":"","reference_type":"","scores":[{"value":"0.00169","scoring_system":"epss","scoring_elements":"0.37911","published_at":"2026-06-05T12:55:00Z"},{"value":"0.00169","scoring_system":"epss","scoring_elements":"0.3782","published_at":"2026-06-04T12:55:00Z"}],"url":"https://api.first.org/data/v1/epss?cve=CVE-2021-39185"},{"reference_url":"https://github.com/http4s/http4s","reference_id":"","reference_type":"","scores":[{"value":"9.1","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N"},{"value":"CRITICAL","scoring_system":"generic_textual","scoring_elements":""}],"url":"https://github.com/http4s/http4s"},{"reference_url":"https://github.com/http4s/http4s/releases/tag/v0.23.2","reference_id":"","reference_type":"","scores":[{"value":"9.1","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N"},{"value":"CRITICAL","scoring_system":"generic_textual","scoring_elements":""}],"url":"https://github.com/http4s/http4s/releases/tag/v0.23.2"},{"reference_url":"https://nvd.nist.gov/vuln/detail/CVE-2021-39185","reference_id":"CVE-2021-39185","reference_type":"","scores":[{"value":"9.1","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N"},{"value":"CRITICAL","scoring_system":"generic_textual","scoring_elements":""}],"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-39185"},{"reference_url":"https://github.com/advisories/GHSA-52cf-226f-rhr6","reference_id":"GHSA-52cf-226f-rhr6","reference_type":"","scores":[],"url":"https://github.com/advisories/GHSA-52cf-226f-rhr6"},{"reference_url":"https://github.com/http4s/http4s/security/advisories/GHSA-52cf-226f-rhr6","reference_id":"GHSA-52cf-226f-rhr6","reference_type":"","scores":[{"value":"9.1","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N"},{"value":"CRITICAL","scoring_system":"generic_textual","scoring_elements":""}],"url":"https://github.com/http4s/http4s/security/advisories/GHSA-52cf-226f-rhr6"}],"fixed_packages":[{"url":"http://public2.vulnerablecode.io/api/packages/58868?format=json","purl":"pkg:maven/org.http4s/http4s-core_2.12@0.21.27","is_vulnerable":true,"affected_by_vulnerabilities":[{"vulnerability":"VCID-1ykn-yyp7-wbgg"},{"vulnerability":"VCID-ecme-hxe7-q7d8"}],"resource_url":"http://public2.vulnerablecode.io/packages/pkg:maven/org.http4s/http4s-core_2.12@0.21.27"},{"url":"http://public2.vulnerablecode.io/api/packages/58869?format=json","purl":"pkg:maven/org.http4s/http4s-core_2.12@0.22-53-01128f5","is_vulnerable":true,"affected_by_vulnerabilities":[{"vulnerability":"VCID-1ykn-yyp7-wbgg"},{"vulnerability":"VCID-83r2-kxmr-zucc"},{"vulnerability":"VCID-ecme-hxe7-q7d8"},{"vulnerability":"VCID-zpsp-jh45-7ygv"}],"resource_url":"http://public2.vulnerablecode.io/packages/pkg:maven/org.http4s/http4s-core_2.12@0.22-53-01128f5"},{"url":"http://public2.vulnerablecode.io/api/packages/525115?format=json","purl":"pkg:maven/org.http4s/http4s-core_2.12@0.22.3","is_vulnerable":true,"affected_by_vulnerabilities":[{"vulnerability":"VCID-1ykn-yyp7-wbgg"},{"vulnerability":"VCID-ecme-hxe7-q7d8"},{"vulnerability":"VCID-zpsp-jh45-7ygv"}],"resource_url":"http://public2.vulnerablecode.io/packages/pkg:maven/org.http4s/http4s-core_2.12@0.22.3"},{"url":"http://public2.vulnerablecode.io/api/packages/58870?format=json","purl":"pkg:maven/org.http4s/http4s-core_2.12@0.23.2","is_vulnerable":true,"affected_by_vulnerabilities":[{"vulnerability":"VCID-1ykn-yyp7-wbgg"},{"vulnerability":"VCID-ecme-hxe7-q7d8"}],"resource_url":"http://public2.vulnerablecode.io/packages/pkg:maven/org.http4s/http4s-core_2.12@0.23.2"},{"url":"http://public2.vulnerablecode.io/api/packages/58871?format=json","purl":"pkg:maven/org.http4s/http4s-core_2.12@1.0-2-1e49ccf","is_vulnerable":false,"affected_by_vulnerabilities":[],"resource_url":"http://public2.vulnerablecode.io/packages/pkg:maven/org.http4s/http4s-core_2.12@1.0-2-1e49ccf"}],"aliases":["CVE-2021-39185","GHSA-52cf-226f-rhr6"],"risk_score":4.5,"exploitability":"0.5","weighted_severity":"9.0","resource_url":"http://public2.vulnerablecode.io/vulnerabilities/VCID-83r2-kxmr-zucc"}],"risk_score":null,"resource_url":"http://public2.vulnerablecode.io/packages/pkg:maven/org.http4s/http4s-core_2.12@0.21.27"}