{"id":"CVE-2019-17513","url":"https://www.cyber-defence.io/tools/cve/CVE-2019-17513","generatedAt":"2026-10-27T21:16:55.783Z","title":"An issue was discovered in Ratpack before 1.7.5.","description":"An issue was discovered in Ratpack before 1.7.5. Due to a misuse of the Netty library class DefaultHttpHeaders, there is no validation that headers lack HTTP control characters. Thus, if untrusted data is used to construct HTTP headers with Ratpack, HTTP Response Splitting can occur.","published":"2019-10-18T03:15:10.000Z","lastModified":"2026-06-17T02:24:02.000Z","status":"Modified","sourceIdentifier":"cve@mitre.org","cvss":{"version":"3.1","score":7.5,"severity":"HIGH","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N"},"cwe":["CWE-74"],"affected":["ratpack project/ratpack"],"epss":{"score":0.02153,"percentile":0.82026,"date":"2026-10-26","history":[]},"kev":{"listed":false},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"high","text":"High impact if exploited, but EPSS currently rates exploitation as unlikely (2.15%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit."},"changes":[],"references":[{"url":"https://github.com/ratpack/ratpack/commit/c560a8d10cb8bdd7a526c1ca2e67c8f224ca23ae","tags":["Patch"],"source":"cve@mitre.org"},{"url":"https://github.com/ratpack/ratpack/commit/efb910d38a96494256f36675ef0e5061097dd77d","tags":["Patch"],"source":"cve@mitre.org"},{"url":"https://github.com/ratpack/ratpack/releases/tag/v1.7.5","tags":["Release Notes","Third Party Advisory"],"source":"cve@mitre.org"},{"url":"https://github.com/ratpack/ratpack/security/advisories/GHSA-mvqp-q37c-wf9j","tags":["Third Party Advisory"],"source":"cve@mitre.org"},{"url":"https://ratpack.io/versions/1.7.5","tags":["Vendor Advisory"],"source":"cve@mitre.org"},{"url":"https://github.com/ratpack/ratpack/commit/c560a8d10cb8bdd7a526c1ca2e67c8f224ca23ae","tags":["Patch"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://github.com/ratpack/ratpack/commit/efb910d38a96494256f36675ef0e5061097dd77d","tags":["Patch"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://github.com/ratpack/ratpack/releases/tag/v1.7.5","tags":["Release Notes","Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://github.com/ratpack/ratpack/security/advisories/GHSA-mvqp-q37c-wf9j","tags":["Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://ratpack.io/versions/1.7.5","tags":["Vendor Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2019-17513","epss":"https://www.first.org/epss/","kev":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","exploitdb":"https://www.exploit-db.com/"},"licence":"CC BY 4.0 — link back to the CVE Explorer if you publish the results; upstream data remains subject to its own terms."}