{"id":"UBUNTU-CVE-2026-22036","details":"Undici is an HTTP/1.1 client for Node.js. Prior to 7.18.0 and 6.23.0, the number of links in the decompression chain is unbounded and the default maxHeaderSize allows a malicious server to insert thousands compression steps leading to high CPU usage and excessive memory allocation. This vulnerability is fixed in 7.18.0 and 6.23.0.","modified":"2026-05-20T16:24:11.625351511Z","published":"2026-01-14T19:16:00Z","upstream":["CVE-2026-22036"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2026-22036"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2026-22036"},{"type":"REPORT","url":"https://github.com/nodejs/undici/security/advisories/GHSA-g9mf-h72j-4rw9"},{"type":"REPORT","url":"https://github.com/nodejs/undici/commit/b04e3cbb569c1596f86c108e9b52c79d8475dcb3"}],"affected":[{"package":{"name":"node-undici","ecosystem":"Ubuntu:24.04:LTS","purl":"pkg:deb/ubuntu/node-undici?arch=source&distro=noble"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["5.22.1+dfsg1+~cs20.10.10.2-1ubuntu1","5.26.3+dfsg1+~cs23.10.12-2"],"ecosystem_specific":{"binaries":[{"binary_version":"9.1.3~5.26.3+dfsg1+~cs23.10.12-2","binary_name":"node-llhttp"},{"binary_name":"node-undici","binary_version":"5.26.3+dfsg1+~cs23.10.12-2"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-22036.json"}},{"package":{"name":"node-undici","ecosystem":"Ubuntu:25.10","purl":"pkg:deb/ubuntu/node-undici?arch=source&distro=questing"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["7.3.0+dfsg1+~cs24.12.11-1","7.3.0+dfsg1+~cs24.12.11-2"],"ecosystem_specific":{"binaries":[{"binary_version":"9.2.1~7.3.0+dfsg1+~cs24.12.11-2","binary_name":"libllhttp9.2"},{"binary_name":"node-llhttp","binary_version":"9.2.1~7.3.0+dfsg1+~cs24.12.11-2"},{"binary_name":"node-undici","binary_version":"7.3.0+dfsg1+~cs24.12.11-2"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-22036.json"}},{"package":{"name":"node-undici","ecosystem":"Ubuntu:26.04:LTS","purl":"pkg:deb/ubuntu/node-undici?arch=source&distro=resolute"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["7.3.0+dfsg1+~cs24.12.11-2","7.16.0+dfsg+~cs3.2.0-2","7.18.2+dfsg+~cs3.2.0-1","7.18.2+dfsg+~cs3.2.0-1build1"],"ecosystem_specific":{"binaries":[{"binary_version":"7.18.2+dfsg+~cs3.2.0-1build1","binary_name":"node-undici"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-22036.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H"},{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"},{"type":"Ubuntu","score":"medium"}]}