{"id":"CVE-2023-27537","state":"PUBLISHED","title":"A double free vulnerability exists in libcurl <8.0.0 when sharing HSTS data between separate \"handles\". This sharing was introduced without considerations for do this sharing acros","description":"A double free vulnerability exists in libcurl <8.0.0 when sharing HSTS data between separate \"handles\". This sharing was introduced without considerations for do this sharing across separate threads but there was no indication of this fact in the documentation. Due to missing mutexes or thread locks, two threads sharing the same HSTS data could end up doing a double-free or use-after-free.","publishedAt":"2023-03-30T00:00:00.000Z","updatedAt":"2026-10-14T22:46:22.700Z","severity":null,"assigner":"hackerone","products":["n/a https://github.com/curl/curl"],"affected":[{"vendor":"n/a","product":"https://github.com/curl/curl","versions":[{"version":"Fixed in 8.0.0","status":"affected"}]}],"references":["https://hackerone.com/reports/1897203","https://security.netapp.com/advisory/ntap-20230420-0010/","https://security.gentoo.org/glsa/202310-12","https://cert-portal.siemens.com/productcert/html/ssa-398330.html","https://cert-portal.siemens.com/productcert/html/ssa-943925.html"],"weaknesses":["CWE-415"],"ingestedAt":"2026-10-29T20:05:52.290Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2023/27xxx/CVE-2023-27537.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2023-27537","state":"PUBLISHED","datePublished":"2023-03-30T00:00:00.000Z","dateUpdated":"2026-10-14T22:46:22.700Z","assignerShortName":"hackerone","assignerOrgId":"36234546-b8fa-4601-9d6f-f4e334aa8ea1","dateReserved":"2023-03-02T00:00:00.000Z"},"containers":{"cna":{"descriptions":[{"lang":"en","value":"A double free vulnerability exists in libcurl <8.0.0 when sharing HSTS data between separate \"handles\". This sharing was introduced without considerations for do this sharing across separate threads but there was no indication of this fact in the documentation. Due to missing mutexes or thread locks, two threads sharing the same HSTS data could end up doing a double-free or use-after-free."}],"affected":[{"vendor":"n/a","product":"https://github.com/curl/curl","versions":[{"version":"Fixed in 8.0.0","status":"affected"}]}],"references":[{"url":"https://hackerone.com/reports/1897203"},{"url":"https://security.netapp.com/advisory/ntap-20230420-0010/"},{"url":"https://security.gentoo.org/glsa/202310-12","name":"GLSA-202310-12","tags":["vendor-advisory"]}],"problemTypes":[{"descriptions":[{"cweId":"CWE-415","type":"CWE","lang":"en","description":"Double Free (CWE-415)"}]}],"providerMetadata":{"shortName":"hackerone","orgId":"36234546-b8fa-4601-9d6f-f4e334aa8ea1","dateUpdated":"2023-10-11T10:06:37.578Z"}},"adp":[{"title":"CVE Program Container","references":[{"url":"https://hackerone.com/reports/1897203","tags":["x_transferred"]},{"url":"https://security.netapp.com/advisory/ntap-20230420-0010/","tags":["x_transferred"]},{"url":"https://security.gentoo.org/glsa/202310-12","name":"GLSA-202310-12","tags":["vendor-advisory","x_transferred"]}],"providerMetadata":{"shortName":"CVE","orgId":"af854a3a-2127-422b-91ae-364da2661108","dateUpdated":"2024-08-02T12:16:35.551Z"}},{"affected":[{"vendor":"Siemens","product":"SIMATIC S7-1500 CPU 1518-4 PN/DP MFP","defaultStatus":"unknown","versions":[{"version":"V3.1.0","status":"affected","lessThan":"V3.1.5","versionType":"custom"}]},{"vendor":"Siemens","product":"SIMATIC S7-1500 CPU 1518-4 PN/DP MFP","defaultStatus":"unknown","versions":[{"version":"V3.1.0","status":"affected","lessThan":"V3.1.5","versionType":"custom"}]},{"vendor":"Siemens","product":"SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP","defaultStatus":"unknown","versions":[{"version":"V3.1.0","status":"affected","lessThan":"V3.1.5","versionType":"custom"}]},{"vendor":"Siemens","product":"SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP","defaultStatus":"unknown","versions":[{"version":"V3.1.0","status":"affected","lessThan":"V3.1.5","versionType":"custom"}]},{"vendor":"Siemens","product":"SIPLUS S7-1500 CPU 1518-4 PN/DP MFP","defaultStatus":"unknown","versions":[{"version":"V3.1.0","status":"affected","lessThan":"V3.1.5","versionType":"custom"}]}],"references":[{"url":"https://cert-portal.siemens.com/productcert/html/ssa-398330.html"},{"url":"https://cert-portal.siemens.com/productcert/html/ssa-943925.html"}],"providerMetadata":{"shortName":"siemens-SADP","orgId":"0b142b55-0307-4c5a-b3c9-f314f3fb7c5e","dateUpdated":"2026-10-14T22:46:22.700Z"},"x_adpType":"supplier"}]}}}