{"url":"http://public2.vulnerablecode.io/api/packages/629156?format=json","purl":"pkg:maven/org.http4s/http4s-core_2.11@0.15.0","type":"maven","namespace":"org.http4s","name":"http4s-core_2.11","version":"0.15.0","qualifiers":{},"subpath":"","is_vulnerable":true,"next_non_vulnerable_version":null,"latest_non_vulnerable_version":null,"affected_by_vulnerabilities":[{"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":"0.56629","published_at":"2026-06-06T12:55:00Z"},{"value":"0.00335","scoring_system":"epss","scoring_elements":"0.56621","published_at":"2026-06-09T12:55:00Z"},{"value":"0.00335","scoring_system":"epss","scoring_elements":"0.56602","published_at":"2026-06-08T12:55:00Z"},{"value":"0.00335","scoring_system":"epss","scoring_elements":"0.56617","published_at":"2026-06-07T12:55:00Z"},{"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":"cvssv3.1_qr","scoring_elements":""},{"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":[{"value":"HIGH","scoring_system":"cvssv3.1_qr","scoring_elements":""}],"url":"https://github.com/advisories/GHSA-54w6-vxfh-fw7f"}],"fixed_packages":[],"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":[],"risk_score":"4.0","resource_url":"http://public2.vulnerablecode.io/packages/pkg:maven/org.http4s/http4s-core_2.11@0.15.0"}