{"id":"CVE-2022-41915","aliases":["GHSA-hh82-3pmq-7frp"],"url":"https://o3.security/vulnerability/CVE-2022-41915","summary":"Netty vulnerable to HTTP Response splitting from assigning header value iterator","details":"### Impact\nWhen calling `DefaultHttpHeaders.set` with an _iterator_ of values (as opposed to a single given value), header value validation was not performed, allowing malicious header values in the iterator to perform [HTTP Response Splitting](https://owasp.org/www-community/attacks/HTTP_Response_Splitting).\n\n### Patches\nThe necessary validation was added in Netty 4.1.86.Final.\n\n### Workarounds\nIntegrators can work around the issue by changing the `DefaultHttpHeaders.set(CharSequence, Iterator<?>)` call, into a `remove()` call, and call `add()` in a loop over the iterator of values.\n\n### References\n[HTTP Response Splitting](https://owasp.org/www-community/attacks/HTTP_Response_Splitting)\n[CWE-113: Improper Neutralization of CRLF Sequences in HTTP Headers](https://cwe.mitre.org/data/definitions/113.html)\n\n### For more information\nIf you have any questions or comments about this advisory:\n* Open an issue in [[example link to repo](https://github.com/netty/netty)](https://github.com/netty/netty)\n* Email us at [netty-security@googlegroups.com](mailto:netty-security@googlegroups.com)\n","published":"2022-12-13T00:00:00Z","modified":"2026-08-12T13:33:26.261807Z","cvss":{"score":6.5,"severity":"MEDIUM","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N"},"epss":{"score":0.00885,"percentile":0.55921,"asOf":"2026-08-11"},"cisaKev":null,"exploitsKnown":1,"affectedPackages":[{"ecosystem":"Maven","name":"io.netty:netty-codec-http","fixedVersion":"4.1.86.Final"}],"fix":{"url":"https://github.com/netty/netty/commit/fe18adff1c2b333acb135ab779a3b9ba3295a1c4","label":"netty/netty@fe18adf"},"references":[{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2022/41xxx/CVE-2022-41915.json"},{"type":"ADVISORY","url":"https://github.com/netty/netty/security/advisories/GHSA-hh82-3pmq-7frp"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2022-41915"},{"type":"ADVISORY","url":"https://security.netapp.com/advisory/ntap-20230113-0004/"},{"type":"ADVISORY","url":"https://www.debian.org/security/2023/dsa-5316"},{"type":"REPORT","url":"https://github.com/netty/netty/issues/13084"},{"type":"FIX","url":"https://github.com/netty/netty/commit/fe18adff1c2b333acb135ab779a3b9ba3295a1c4"},{"type":"FIX","url":"https://github.com/netty/netty/pull/12760"},{"type":"ARTICLE","url":"https://lists.debian.org/debian-lts-announce/2023/01/msg00008.html"},{"type":"WEB","url":"https://github.com/netty/netty/commit/c37c637f096e7be3dffd36edee3455c8e90cb1b0"},{"type":"WEB","url":"https://github.com/netty/netty"},{"type":"WEB","url":"https://security.netapp.com/advisory/ntap-20230113-0004"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-08-12T13:33:26.261807Z"}}