{"id":"GHSA-wjfc-pgfp-pv9c","aliases":[],"title":"Improper Input Validation in nyholm/psr7","titleSource":"OSV","descriptionSource":"OSV","declaredSeverity":"MODERATE","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 1.6.1.\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":"medium","score":5.3,"published":"2023-04-21T20:27:30.000Z","modified":"2024-11-29T05:28:02.962Z","withdrawn":false,"knownExploited":false,"affected":[{"ecosystem":"Packagist","name":"nyholm/psr7","sources":[{"name":"OSV · GHSA-wjfc-pgfp-pv9c","url":"https://osv.dev/vulnerability/GHSA-wjfc-pgfp-pv9c"}],"ranges":[{"events":[{"introduced":"0"},{"fixed":"1.6.1"}],"type":"ECOSYSTEM"}],"versions":["0.1.0","0.2.0","0.2.1","0.2.2","0.2.3","0.3.0","1.0.0","1.0.1","1.1.0","1.2.0","1.2.1","1.3.0","1.3.1","1.3.2","1.4.0","1.4.1","1.5.0","1.5.1","1.6.0"],"fixed":["1.6.1"]}],"sourceAffected":[],"references":["https://github.com/Nyholm/psr7/security/advisories/GHSA-wjfc-pgfp-pv9c","https://github.com/guzzle/psr7/security/advisories/GHSA-q7rv-6hp3-vh96","https://github.com/guzzle/psr7/security/advisories/GHSA-wxmh-65f7-jcvw","https://nvd.nist.gov/vuln/detail/CVE-2023-29197","https://github.com/FriendsOfPHP/security-advisories/blob/master/nyholm/psr7/2023-04-17.yaml","https://github.com/Nyholm/psr7"],"sources":[{"name":"OSV","id":"GHSA-wjfc-pgfp-pv9c","modified":"2024-11-29T05:28:02.962505Z","url":"https://osv.dev/vulnerability/GHSA-wjfc-pgfp-pv9c"}],"assessments":[{"source":"OSV","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N","score":5.3}],"products":[],"remediation":[],"kev":{"status":"unavailable","checkedAt":"2026-10-28T20:15:32.897Z"},"coverage":[{"source":"NVD","status":"not-checked"},{"source":"GHSA","status":"not-checked"},{"source":"EUVD","status":"not-checked"},{"source":"EPSS","status":"not-checked"}],"evidence":[]}