{"id":"CVE-2026-3805","state":"PUBLISHED","title":"use after free in SMB connection reuse","description":"When doing a second SMB request to the same host again, curl would wrongly use\na data pointer pointing into already freed memory.","publishedAt":"2026-03-11T10:09:37.729Z","updatedAt":"2026-09-15T06:02:55.871Z","severity":{"score":7.5,"label":"High","version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","source":"CISA-ADP"},"assigner":"curl","products":["curl curl"],"affected":[{"vendor":"curl","product":"curl","defaultStatus":"unaffected","versions":[{"version":"8.13.0","status":"affected","lessThan":"8.14.2","versionType":"semver"},{"version":"8.15.0","status":"affected","lessThan":"8.16.1","versionType":"semver"},{"version":"8.17.0","status":"affected","lessThan":"8.19.0","versionType":"semver"}]},{"vendor":"curl","product":"curl","defaultStatus":"unaffected","versions":[{"version":"f4831daa9b2a97e8a2921d6b62cc4dfdd0d8646e","status":"affected","lessThan":"e090be9f73a7a71459ef678c7cc4b1f75e3ea883","versionType":"git"}],"repo":"https://github.com/curl/curl.git"},{"vendor":"curl","product":"curl","defaultStatus":"unaffected","versions":[{"version":"8.18.0","status":"affected"},{"version":"8.17.0","status":"affected"},{"version":"8.16.0","status":"affected"},{"version":"8.15.0","status":"affected"},{"version":"8.14.1","status":"affected"},{"version":"8.14.0","status":"affected"},{"version":"8.13.0","status":"affected"}]}],"references":["https://curl.se/docs/CVE-2026-3805.json","https://curl.se/docs/CVE-2026-3805.html","https://hackerone.com/reports/3591944","http://www.openwall.com/lists/oss-security/2026/03/11/4"],"weaknesses":["CWE-416"],"ingestedAt":"2026-10-29T20:11:50.837Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/3xxx/CVE-2026-3805.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-3805","state":"PUBLISHED","datePublished":"2026-03-11T10:09:37.729Z","dateUpdated":"2026-09-15T06:02:55.871Z","assignerShortName":"curl","assignerOrgId":"2499f714-1537-4658-8207-48ae4bb9eae9","dateReserved":"2026-03-08T16:07:39.817Z"},"containers":{"cna":{"title":"use after free in SMB connection reuse","descriptions":[{"lang":"en","value":"When doing a second SMB request to the same host again, curl would wrongly use\na data pointer pointing into already freed memory."}],"affected":[{"vendor":"curl","product":"curl","defaultStatus":"unaffected","versions":[{"version":"8.13.0","status":"affected","lessThan":"8.14.2","versionType":"semver"},{"version":"8.15.0","status":"affected","lessThan":"8.16.1","versionType":"semver"},{"version":"8.17.0","status":"affected","lessThan":"8.19.0","versionType":"semver"}]},{"vendor":"curl","product":"curl","defaultStatus":"unaffected","versions":[{"version":"f4831daa9b2a97e8a2921d6b62cc4dfdd0d8646e","status":"affected","lessThan":"e090be9f73a7a71459ef678c7cc4b1f75e3ea883","versionType":"git"}],"repo":"https://github.com/curl/curl.git"},{"vendor":"curl","product":"curl","defaultStatus":"unaffected","versions":[{"version":"8.18.0","status":"affected"},{"version":"8.17.0","status":"affected"},{"version":"8.16.0","status":"affected"},{"version":"8.15.0","status":"affected"},{"version":"8.14.1","status":"affected"},{"version":"8.14.0","status":"affected"},{"version":"8.13.0","status":"affected"}]}],"references":[{"url":"https://curl.se/docs/CVE-2026-3805.json"},{"url":"https://curl.se/docs/CVE-2026-3805.html"},{"url":"https://hackerone.com/reports/3591944"}],"problemTypes":[{"descriptions":[{"cweId":"CWE-416","lang":"en","description":"Use After Free","type":"CWE"}]}],"providerMetadata":{"shortName":"curl","orgId":"2499f714-1537-4658-8207-48ae4bb9eae9","dateUpdated":"2026-09-15T06:02:55.871Z"},"x_osv":{"schema_version":"1.5.0","id":"CURL-CVE-2026-3805","aliases":["CVE-2026-3805"],"summary":"use after free in SMB connection reuse","modified":"2026-09-07T10:34:51.00Z","database_specific":{"package":"curl","affects":"both","URL":"https://curl.se/docs/CVE-2026-3805.json","www":"https://curl.se/docs/CVE-2026-3805.html","issue":"https://hackerone.com/reports/3591944","CWE":{"id":"CWE-416","desc":"Use After Free"},"last_affected":"8.18.0","severity":"Medium"},"published":"2026-03-11T08:00:00.00Z","affected":[{"ranges":[{"type":"SEMVER","events":[{"introduced":"8.13.0"},{"fixed":"8.14.2"},{"introduced":"8.15.0"},{"fixed":"8.16.1"},{"introduced":"8.17.0"},{"fixed":"8.19.0"}]},{"type":"GIT","repo":"https://github.com/curl/curl.git","events":[{"introduced":"f4831daa9b2a97e8a2921d6b62cc4dfdd0d8646e"},{"fixed":"e090be9f73a7a71459ef678c7cc4b1f75e3ea883"}]}],"versions":["8.18.0","8.17.0","8.16.0","8.15.0","8.14.1","8.14.0","8.13.0"]}],"credits":[{"name":"Daniel Wade","type":"finder"},{"name":"Stefan Eissing","type":"remediation developer"}],"details":"When doing a second SMB request to the same host again, curl would wrongly use\na data pointer pointing into already freed memory."},"credits":[{"lang":"en","value":"Daniel Wade","type":"finder"},{"lang":"en","value":"Stefan Eissing","type":"remediation developer"}],"x_generator":{"engine":"cvelib 1.8.0"}},"adp":[{"title":"CVE Program Container","references":[{"url":"http://www.openwall.com/lists/oss-security/2026/03/11/4"}],"providerMetadata":{"shortName":"CVE","orgId":"af854a3a-2127-422b-91ae-364da2661108","dateUpdated":"2026-03-11T10:16:34.391Z"}},{"title":"CISA ADP Vulnrichment","metrics":[{"cvssV3_1":{"scope":"UNCHANGED","version":"3.1","baseScore":7.5,"attackVector":"NETWORK","baseSeverity":"HIGH","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","integrityImpact":"NONE","userInteraction":"NONE","attackComplexity":"LOW","availabilityImpact":"HIGH","privilegesRequired":"NONE","confidentialityImpact":"NONE"}},{"other":{"type":"ssvc","content":{"timestamp":"2026-03-11T15:45:10.217077Z","id":"CVE-2026-3805","options":[{"Exploitation":"poc"},{"Automatable":"yes"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-416","type":"CWE","lang":"en","description":"CWE-416 Use After Free"}]}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-03-11T15:45:38.820Z"}}]}}}