{"id":"CVE-2026-3805","summary":"use after free in SMB connection reuse","details":"When doing a second SMB request to the same host again, curl would wrongly use\na data pointer pointing into already freed memory.","aliases":["CURL-CVE-2026-3805"],"modified":"2026-09-16T03:30:36.689983455Z","published":"2026-03-11T10:09:37.729Z","related":["SUSE-SU-2026:0879-1","SUSE-SU-2026:0885-1","SUSE-SU-2026:0903-1","SUSE-SU-2026:0911-1","SUSE-SU-2026:20668-1","SUSE-SU-2026:20722-1","SUSE-SU-2026:20760-1","SUSE-SU-2026:20918-1","openSUSE-SU-2026:10371-1","openSUSE-SU-2026:20404-1"],"database_specific":{"cna_assigner":"curl","cwe_ids":["CWE-416"],"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/3xxx/CVE-2026-3805.json","unresolved_ranges":[{"extracted_events":[{"introduced":"8.13.0"},{"fixed":"8.14.2"},{"introduced":"8.15.0"},{"fixed":"8.16.1"},{"introduced":"f4831daa9b2a97e8a2921d6b62cc4dfdd0d8646e"},{"fixed":"e090be9f73a7a71459ef678c7cc4b1f75e3ea883"}],"source":"AFFECTED_FIELD"}]},"references":[{"type":"WEB","url":"http://www.openwall.com/lists/oss-security/2026/03/11/4"},{"type":"WEB","url":"https://curl.se/docs/CVE-2026-3805.html"},{"type":"WEB","url":"https://curl.se/docs/CVE-2026-3805.json"},{"type":"WEB","url":"https://hackerone.com/reports/3591944"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/3xxx/CVE-2026-3805.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-3805"},{"type":"PACKAGE","url":"https://github.com/curl/curl.git"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/curl/curl","events":[{"introduced":"1c3149881769e7bd79b072e48374e4c2b3678b2f"},{"fixed":"8c908d2d0a6d32abdedda2c52e90bd56ec76c24d"}],"database_specific":{"extracted_events":[{"introduced":"8.13.0"},{"fixed":"8.19.0"}],"source":"CPE_RANGE","cpe":"cpe:2.3:a:haxx:curl:*:*:*:*:*:*:*:*"}}],"versions":["8.13.0","8.14.0","8.14.1","8.15.0","8.16.0","8.18.0","rc-8_19_0-3","rc-8_19_0-2","rc-8_19_0-1","curl-8_18_0","rc-8_18_0-3","rc-8_18_0-2","rc-8_18_0-1","curl-8_17_0","curl-8_16_0","curl-8_15_0","curl-8_14_1","curl-8_14_0","curl-8_13_0"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-3805.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"}]}