{"id":"GHSA-9jxr-mwpp-w643","aliases":[],"status":"published","title":"Improper header validation in httpsoft/http-message","description":"### Impact\n\nImproper header parsing. An attacker could sneak in a newline (`\\n`) into both the header names and values. While the specification states that `\\r\\n\\r\\n` is used to terminate the header list, many servers in the wild will also accept `\\n\\n`.\n\n### Patches\n\nThe issue is patched in 1.0.12.\n\n### Workarounds\n\nThere are no known workarounds.\n\n### References\n\n* https://www.rfc-editor.org/rfc/rfc7230#section-3.2.4","severity":{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N","level":"medium","from":"ghsa"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-436"],"published":"2023-04-21T20:27:12Z","modified":"2024-12-06T05:39:27Z","fixes":[{"ecosystem":"Packagist","package":"httpsoft/http-message","fixed_in":["1.0.12"],"sources":["ghsa","osv"]}],"affected":[{"source":"ghsa","ecosystem":"Packagist","package":"httpsoft/http-message","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.0.12"}]}]},{"source":"osv","ecosystem":"Packagist","package":"httpsoft/http-message","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.0.12"}]}],"versions":["1.0.0","1.0.1","1.0.10","1.0.11","1.0.2","1.0.3","1.0.4","1.0.5","1.0.6","1.0.7","1.0.8","1.0.9"]}],"references":[{"url":"https://github.com/guzzle/psr7/security/advisories/GHSA-wxmh-65f7-jcvw","tags":["web"]},{"url":"https://github.com/httpsoft/http-message/security/advisories/GHSA-9jxr-mwpp-w643","tags":["web"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2023-29197","tags":["advisory"]},{"url":"https://github.com/advisories/GHSA-9jxr-mwpp-w643"},{"url":"https://github.com/httpsoft/http-message","tags":["package"]}],"sources":{"ghsa":[{"id":"GHSA-9jxr-mwpp-w643","title":"Improper header validation in httpsoft/http-message","description":"### Impact\n\nImproper header parsing. An attacker could sneak in a newline (`\\n`) into both the header names and values. While the specification states that `\\r\\n\\r\\n` is used to terminate the header list, many servers in the wild will also accept `\\n\\n`.\n\n### Patches\n\nThe issue is patched in 1.0.12.\n\n### Workarounds\n\nThere are no known workarounds.\n\n### References\n\n* https://www.rfc-editor.org/rfc/rfc7230#section-3.2.4","status":"published","published":"2023-04-21T20:27:12Z","modified":"2023-04-21T20:27:16Z","cvss":[{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N","level":"medium"}],"cwes":["CWE-436"],"updated_at":"2026-11-02T14:36:51.39133Z"}],"osv":[{"id":"GHSA-9jxr-mwpp-w643","title":"Improper header validation in httpsoft/http-message","description":"### Impact\n\nImproper header parsing. An attacker could sneak in a newline (`\\n`) into both the header names and values. While the specification states that `\\r\\n\\r\\n` is used to terminate the header list, many servers in the wild will also accept `\\n\\n`.\n\n### Patches\n\nThe issue is patched in 1.0.12.\n\n### Workarounds\n\nThere are no known workarounds.\n\n### References\n\n* https://www.rfc-editor.org/rfc/rfc7230#section-3.2.4","status":"published","published":"2023-04-21T20:27:12Z","modified":"2024-12-06T05:39:27.356128Z","cvss":[{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N","level":"medium"}],"cwes":["CWE-436"],"updated_at":"2026-11-02T15:46:43.875515Z"}]}}