{"id":"CVE-2023-27538","revision":null,"records":[{"revision":"cce763516ad34c07a49acbf048db094a","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2023-27538","aliases":[],"title":"An authentication bypass vulnerability exists in libcurl prior to v8.0.0 where it reuses a previously established SSH connection despite the fact that an SSH option was modified, which should have prevented reuse. libcurl maintains a pool o…","description":"An authentication bypass vulnerability exists in libcurl prior to v8.0.0 where it reuses a previously established SSH connection despite the fact that an SSH option was modified, which should have prevented reuse. libcurl maintains a pool of previously used connections to reuse them for subsequent transfers if the configurations match. However, two SSH settings were omitted from the configuration check, allowing them to match easily, potentially leading to the reuse of an inappropriate connection.","state":0,"publishedAt":"2023-03-30T00:00:00+00:00","modifiedAt":"2026-10-14T22:46:24.426+00:00","affected":[{"ecosystem":"Vendor product","name":"https://github.com/curl/curl","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"vendor\": \"n/a\",\n                    \"product\": \"https://github.com/curl/curl\",\n                    \"versions\": [\n                        {\n                            \"version\": \"Fixed in 8.0.0\",\n                            \"status\": \"affected\"\n                        }\n                    ]\n                }"}],"metrics":[],"references":["https://hackerone.com/reports/1898475","https://security.netapp.com/advisory/ntap-20230420-0010/","https://lists.debian.org/debian-lts-announce/2023/04/msg00025.html","https://security.gentoo.org/glsa/202310-12"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2023-27538","license":"CVE Program Terms of Use","key":"cve-program:CVE-2023-27538","identifiers":["CVE-2023-27538"]},"retained":false,"historicalAffected":[]}],"coverage":[{"source":"cisa-kev:global","scope":"Complete CISA KEV catalog; all vendors. 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Not a global EUVD catalog. Successful not-found lookups count as checked; they do not imply withdrawal or safety. No reader inventory is sent.","generation":"enrichment-5522e4ae35aa4bdc9d39e95136c0428b","complete":false,"records":13672,"lastAttemptAt":"2026-11-09T22:17:03.1981375+00:00","lastSuccessAt":"2026-11-09T22:17:03.194+00:00","error":"27 identifier lookups failed; latest failures include HTTP 403. Other identifiers were checked independently.","lastVerifiedAt":"2026-11-09T22:17:03.194+00:00","snapshotPublishedAt":null,"importing":false,"stagedRecords":0,"checkedIdentifiers":13207,"expectedIdentifiers":13725,"failedIdentifiers":27},{"source":"first-epss:nuget","scope":"FIRST EPSS for explicit CVE aliases in the collected public NuGet archive. Not a global EPSS backfill.","generation":"2026-11-09T22:04:21.7510311+00:00","complete":true,"records":1096,"lastAttemptAt":"2026-11-09T22:04:21.7510311+00:00","lastSuccessAt":"2026-11-09T22:04:21.9181937+00:00","error":null,"lastVerifiedAt":"2026-11-09T22:04:21.9181977+00:00","snapshotPublishedAt":null,"importing":false,"stagedRecords":0,"checkedIdentifiers":null,"expectedIdentifiers":null,"failedIdentifiers":null},{"source":"nvd","scope":"Rolling NVD lookups of CVE aliases in current public OSV archives; 500 identifiers per refresh, rechecked after 48 hours. Not a global NVD catalog. Successful not-found lookups count as checked; they do not imply withdrawal or safety. No reader inventory is sent.","generation":"enrichment-8b527f7960454708a3fcfe8f37f191e9","complete":false,"records":13680,"lastAttemptAt":"2026-11-09T22:04:47.0464678+00:00","lastSuccessAt":"2026-11-09T22:04:47.043+00:00","error":null,"lastVerifiedAt":"2026-11-09T22:04:47.043+00:00","snapshotPublishedAt":null,"importing":false,"stagedRecords":0,"checkedIdentifiers":13704,"expectedIdentifiers":13725,"failedIdentifiers":0},{"source":"osv:Go","scope":"Complete OSV Go ecosystem archive, including withdrawn and malicious-package source records; statement counts are not unique CVE counts","generation":"go-422f1ff5212ec8e62457b7c5d867c0d7ff5bdd57ee4fe937d3d7712d35f862bb","complete":true,"records":9919,"lastAttemptAt":"2026-11-09T22:04:21.6095423+00:00","lastSuccessAt":"2026-11-09T22:04:21.3703177+00:00","error":null,"lastVerifiedAt":"2026-11-09T22:04:21.6095423+00:00","snapshotPublishedAt":"2026-11-09T22:03:02+00:00","importing":false,"stagedRecords":0,"checkedIdentifiers":null,"expectedIdentifiers":null,"failedIdentifiers":null},{"source":"osv:NuGet","scope":"Complete OSV NuGet ecosystem archive, including GitHub Advisory Database records; NuGet version matching only","generation":"nuget-26503967ae4379db8f374089589d6e03fb15bd31f820c9e992aaf93840c2236c","complete":true,"records":1971,"lastAttemptAt":"2026-11-09T22:02:15.7662034+00:00","lastSuccessAt":"2026-11-09T21:02:20.472473+00:00","error":null,"lastVerifiedAt":"2026-11-09T22:02:15.7662034+00:00","snapshotPublishedAt":"2026-11-09T20:18:18+00:00","importing":false,"stagedRecords":0,"checkedIdentifiers":null,"expectedIdentifiers":null,"failedIdentifiers":null},{"source":"osv:crates.io","scope":"Complete OSV crates.io ecosystem archive, including withdrawn and malicious-package source records; statement counts are not unique CVE counts","generation":"crates.io-761ecc9061239b0da572dc9254c6f384c1d19339eb08408c436647a2f26129e9","complete":true,"records":3064,"lastAttemptAt":"2026-11-09T22:04:21.7141844+00:00","lastSuccessAt":"2026-11-09T17:05:03.4044794+00:00","error":null,"lastVerifiedAt":"2026-11-09T22:04:21.7141844+00:00","snapshotPublishedAt":"2026-11-09T16:33:20+00:00","importing":false,"stagedRecords":0,"checkedIdentifiers":null,"expectedIdentifiers":null,"failedIdentifiers":null},{"source":"osv:npm","scope":"Complete OSV npm ecosystem archive, including withdrawn and malicious-package source records; statement counts are not unique CVE counts","generation":"npm-cefd5e58c60b69931053d90de4b49991fc540e6131b53c29cfa39467d9128b3a","complete":true,"records":231328,"lastAttemptAt":"2026-11-09T22:04:12.3749697+00:00","lastSuccessAt":"2026-11-09T22:04:10.8762138+00:00","error":null,"lastVerifiedAt":"2026-11-09T22:04:12.3749697+00:00","snapshotPublishedAt":"2026-11-09T21:48:24+00:00","importing":false,"stagedRecords":0,"checkedIdentifiers":null,"expectedIdentifiers":null,"failedIdentifiers":null}]}