{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-3784","assignerOrgId":"2499f714-1537-4658-8207-48ae4bb9eae9","state":"PUBLISHED","assignerShortName":"curl","dateReserved":"2026-03-08T05:09:52.279Z","datePublished":"2026-03-11T10:09:21.418Z","dateUpdated":"2026-09-15T06:02:54.443Z"},"containers":{"cna":{"providerMetadata":{"orgId":"2499f714-1537-4658-8207-48ae4bb9eae9","shortName":"curl","dateUpdated":"2026-09-15T06:02:54.443Z"},"title":"wrong proxy connection reuse with credentials","descriptions":[{"lang":"en","value":"curl would wrongly reuse an existing HTTP proxy connection doing CONNECT to a\nserver, even if the new request uses different credentials for the HTTP proxy.\nThe proper behavior is to create or use a separate connection."}],"affected":[{"vendor":"curl","product":"curl","versions":[{"version":"7.7.0","status":"affected","versionType":"semver","lessThan":"8.14.2"},{"version":"8.15.0","status":"affected","versionType":"semver","lessThan":"8.16.1"},{"version":"8.17.0","status":"affected","versionType":"semver","lessThan":"8.19.0"}],"defaultStatus":"unaffected"},{"vendor":"curl","product":"curl","versions":[{"version":"a1d6ad26100bc493c7b04f1301b1634b7f5aa8b4","status":"affected","versionType":"git","lessThan":"5f13a7645e565c5c1a06f3ef86e97afb856fb364"}],"defaultStatus":"unaffected","repo":"https://github.com/curl/curl.git"},{"vendor":"curl","product":"curl","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"},{"version":"8.12.1","status":"affected"},{"version":"8.12.0","status":"affected"},{"version":"8.11.1","status":"affected"},{"version":"8.11.0","status":"affected"},{"version":"8.10.1","status":"affected"},{"version":"8.10.0","status":"affected"},{"version":"8.9.1","status":"affected"},{"version":"8.9.0","status":"affected"},{"version":"8.8.0","status":"affected"},{"version":"8.7.1","status":"affected"},{"version":"8.7.0","status":"affected"},{"version":"8.6.0","status":"affected"},{"version":"8.5.0","status":"affected"},{"version":"8.4.0","status":"affected"},{"version":"8.3.0","status":"affected"},{"version":"8.2.1","status":"affected"},{"version":"8.2.0","status":"affected"},{"version":"8.1.2","status":"affected"},{"version":"8.1.1","status":"affected"},{"version":"8.1.0","status":"affected"},{"version":"8.0.1","status":"affected"},{"version":"8.0.0","status":"affected"},{"version":"7.88.1","status":"affected"},{"version":"7.88.0","status":"affected"},{"version":"7.87.0","status":"affected"},{"version":"7.86.0","status":"affected"},{"version":"7.85.0","status":"affected"},{"version":"7.84.0","status":"affected"},{"version":"7.83.1","status":"affected"},{"version":"7.83.0","status":"affected"},{"version":"7.82.0","status":"affected"},{"version":"7.81.0","status":"affected"},{"version":"7.80.0","status":"affected"},{"version":"7.79.1","status":"affected"},{"version":"7.79.0","status":"affected"},{"version":"7.78.0","status":"affected"},{"version":"7.77.0","status":"affected"},{"version":"7.76.1","status":"affected"},{"version":"7.76.0","status":"affected"},{"version":"7.75.0","status":"affected"},{"version":"7.74.0","status":"affected"},{"version":"7.73.0","status":"affected"},{"version":"7.72.0","status":"affected"},{"version":"7.71.1","status":"affected"},{"version":"7.71.0","status":"affected"},{"version":"7.70.0","status":"affected"},{"version":"7.69.1","status":"affected"},{"version":"7.69.0","status":"affected"},{"version":"7.68.0","status":"affected"},{"version":"7.67.0","status":"affected"},{"version":"7.66.0","status":"affected"},{"version":"7.65.3","status":"affected"},{"version":"7.65.2","status":"affected"},{"version":"7.65.1","status":"affected"},{"version":"7.65.0","status":"affected"},{"version":"7.64.1","status":"affected"},{"version":"7.64.0","status":"affected"},{"version":"7.63.0","status":"affected"},{"version":"7.62.0","status":"affected"},{"version":"7.61.1","status":"affected"},{"version":"7.61.0","status":"affected"},{"version":"7.60.0","status":"affected"},{"version":"7.59.0","status":"affected"},{"version":"7.58.0","status":"affected"},{"version":"7.57.0","status":"affected"},{"version":"7.56.1","status":"affected"},{"version":"7.56.0","status":"affected"},{"version":"7.55.1","status":"affected"},{"version":"7.55.0","status":"affected"},{"version":"7.54.1","status":"affected"},{"version":"7.54.0","status":"affected"},{"version":"7.53.1","status":"affected"},{"version":"7.53.0","status":"affected"},{"version":"7.52.1","status":"affected"},{"version":"7.52.0","status":"affected"},{"version":"7.51.0","status":"affected"},{"version":"7.50.3","status":"affected"},{"version":"7.50.2","status":"affected"},{"version":"7.50.1","status":"affected"},{"version":"7.50.0","status":"affected"},{"version":"7.49.1","status":"affected"},{"version":"7.49.0","status":"affected"},{"version":"7.48.0","status":"affected"},{"version":"7.47.1","status":"affected"},{"version":"7.47.0","status":"affected"},{"version":"7.46.0","status":"affected"},{"version":"7.45.0","status":"affected"},{"version":"7.44.0","status":"affected"},{"version":"7.43.0","status":"affected"},{"version":"7.42.1","status":"affected"},{"version":"7.42.0","status":"affected"},{"version":"7.41.0","status":"affected"},{"version":"7.40.0","status":"affected"},{"version":"7.39.0","status":"affected"},{"version":"7.38.0","status":"affected"},{"version":"7.37.1","status":"affected"},{"version":"7.37.0","status":"affected"},{"version":"7.36.0","status":"affected"},{"version":"7.35.0","status":"affected"},{"version":"7.34.0","status":"affected"},{"version":"7.33.0","status":"affected"},{"version":"7.32.0","status":"affected"},{"version":"7.31.0","status":"affected"},{"version":"7.30.0","status":"affected"},{"version":"7.29.0","status":"affected"},{"version":"7.28.1","status":"affected"},{"version":"7.28.0","status":"affected"},{"version":"7.27.0","status":"affected"},{"version":"7.26.0","status":"affected"},{"version":"7.25.0","status":"affected"},{"version":"7.24.0","status":"affected"},{"version":"7.23.1","status":"affected"},{"version":"7.23.0","status":"affected"},{"version":"7.22.0","status":"affected"},{"version":"7.21.7","status":"affected"},{"version":"7.21.6","status":"affected"},{"version":"7.21.5","status":"affected"},{"version":"7.21.4","status":"affected"},{"version":"7.21.3","status":"affected"},{"version":"7.21.2","status":"affected"},{"version":"7.21.1","status":"affected"},{"version":"7.21.0","status":"affected"},{"version":"7.20.1","status":"affected"},{"version":"7.20.0","status":"affected"},{"version":"7.19.7","status":"affected"},{"version":"7.19.6","status":"affected"},{"version":"7.19.5","status":"affected"},{"version":"7.19.4","status":"affected"},{"version":"7.19.3","status":"affected"},{"version":"7.19.2","status":"affected"},{"version":"7.19.1","status":"affected"},{"version":"7.19.0","status":"affected"},{"version":"7.18.2","status":"affected"},{"version":"7.18.1","status":"affected"},{"version":"7.18.0","status":"affected"},{"version":"7.17.1","status":"affected"},{"version":"7.17.0","status":"affected"},{"version":"7.16.4","status":"affected"},{"version":"7.16.3","status":"affected"},{"version":"7.16.2","status":"affected"},{"version":"7.16.1","status":"affected"},{"version":"7.16.0","status":"affected"},{"version":"7.15.5","status":"affected"},{"version":"7.15.4","status":"affected"},{"version":"7.15.3","status":"affected"},{"version":"7.15.2","status":"affected"},{"version":"7.15.1","status":"affected"},{"version":"7.15.0","status":"affected"},{"version":"7.14.1","status":"affected"},{"version":"7.14.0","status":"affected"},{"version":"7.13.2","status":"affected"},{"version":"7.13.1","status":"affected"},{"version":"7.13.0","status":"affected"},{"version":"7.12.3","status":"affected"},{"version":"7.12.2","status":"affected"},{"version":"7.12.1","status":"affected"},{"version":"7.12.0","status":"affected"},{"version":"7.11.2","status":"affected"},{"version":"7.11.1","status":"affected"},{"version":"7.11.0","status":"affected"},{"version":"7.10.8","status":"affected"},{"version":"7.10.7","status":"affected"},{"version":"7.10.6","status":"affected"},{"version":"7.10.5","status":"affected"},{"version":"7.10.4","status":"affected"},{"version":"7.10.3","status":"affected"},{"version":"7.10.2","status":"affected"},{"version":"7.10.1","status":"affected"},{"version":"7.10","status":"affected"},{"version":"7.9.8","status":"affected"},{"version":"7.9.7","status":"affected"},{"version":"7.9.6","status":"affected"},{"version":"7.9.5","status":"affected"},{"version":"7.9.4","status":"affected"},{"version":"7.9.3","status":"affected"},{"version":"7.9.2","status":"affected"},{"version":"7.9.1","status":"affected"},{"version":"7.9","status":"affected"},{"version":"7.8.1","status":"affected"},{"version":"7.8","status":"affected"},{"version":"7.7.3","status":"affected"},{"version":"7.7.2","status":"affected"},{"version":"7.7.1","status":"affected"},{"version":"7.7","status":"affected"}],"defaultStatus":"unaffected"}],"references":[{"url":"https://curl.se/docs/CVE-2026-3784.json"},{"url":"https://curl.se/docs/CVE-2026-3784.html"},{"url":"https://hackerone.com/reports/3584903"}],"x_osv":{"schema_version":"1.5.0","id":"CURL-CVE-2026-3784","aliases":["CVE-2026-3784"],"summary":"wrong proxy connection reuse with credentials","modified":"2026-09-07T10:34:51.00Z","database_specific":{"package":"curl","affects":"both","URL":"https://curl.se/docs/CVE-2026-3784.json","www":"https://curl.se/docs/CVE-2026-3784.html","issue":"https://hackerone.com/reports/3584903","CWE":{"id":"CWE-305","desc":"Authentication Bypass by Primary Weakness"},"last_affected":"8.18.0","severity":"Low"},"published":"2026-03-11T08:00:00.00Z","affected":[{"ranges":[{"type":"SEMVER","events":[{"introduced":"7.7.0"},{"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":"a1d6ad26100bc493c7b04f1301b1634b7f5aa8b4"},{"fixed":"5f13a7645e565c5c1a06f3ef86e97afb856fb364"}]}],"versions":["8.18.0","8.17.0","8.16.0","8.15.0","8.14.1","8.14.0","8.13.0","8.12.1","8.12.0","8.11.1","8.11.0","8.10.1","8.10.0","8.9.1","8.9.0","8.8.0","8.7.1","8.7.0","8.6.0","8.5.0","8.4.0","8.3.0","8.2.1","8.2.0","8.1.2","8.1.1","8.1.0","8.0.1","8.0.0","7.88.1","7.88.0","7.87.0","7.86.0","7.85.0","7.84.0","7.83.1","7.83.0","7.82.0","7.81.0","7.80.0","7.79.1","7.79.0","7.78.0","7.77.0","7.76.1","7.76.0","7.75.0","7.74.0","7.73.0","7.72.0","7.71.1","7.71.0","7.70.0","7.69.1","7.69.0","7.68.0","7.67.0","7.66.0","7.65.3","7.65.2","7.65.1","7.65.0","7.64.1","7.64.0","7.63.0","7.62.0","7.61.1","7.61.0","7.60.0","7.59.0","7.58.0","7.57.0","7.56.1","7.56.0","7.55.1","7.55.0","7.54.1","7.54.0","7.53.1","7.53.0","7.52.1","7.52.0","7.51.0","7.50.3","7.50.2","7.50.1","7.50.0","7.49.1","7.49.0","7.48.0","7.47.1","7.47.0","7.46.0","7.45.0","7.44.0","7.43.0","7.42.1","7.42.0","7.41.0","7.40.0","7.39.0","7.38.0","7.37.1","7.37.0","7.36.0","7.35.0","7.34.0","7.33.0","7.32.0","7.31.0","7.30.0","7.29.0","7.28.1","7.28.0","7.27.0","7.26.0","7.25.0","7.24.0","7.23.1","7.23.0","7.22.0","7.21.7","7.21.6","7.21.5","7.21.4","7.21.3","7.21.2","7.21.1","7.21.0","7.20.1","7.20.0","7.19.7","7.19.6","7.19.5","7.19.4","7.19.3","7.19.2","7.19.1","7.19.0","7.18.2","7.18.1","7.18.0","7.17.1","7.17.0","7.16.4","7.16.3","7.16.2","7.16.1","7.16.0","7.15.5","7.15.4","7.15.3","7.15.2","7.15.1","7.15.0","7.14.1","7.14.0","7.13.2","7.13.1","7.13.0","7.12.3","7.12.2","7.12.1","7.12.0","7.11.2","7.11.1","7.11.0","7.10.8","7.10.7","7.10.6","7.10.5","7.10.4","7.10.3","7.10.2","7.10.1","7.10","7.9.8","7.9.7","7.9.6","7.9.5","7.9.4","7.9.3","7.9.2","7.9.1","7.9","7.8.1","7.8","7.7.3","7.7.2","7.7.1","7.7"]}],"credits":[{"name":"Muhamad Arga Reksapati (HackerOne: nobcoder)","type":"finder"},{"name":"Stefan Eissing","type":"remediation developer"}],"details":"curl would wrongly reuse an existing HTTP proxy connection doing CONNECT to a\nserver, even if the new request uses different credentials for the HTTP proxy.\nThe proper behavior is to create or use a separate connection."},"problemTypes":[{"descriptions":[{"lang":"en","description":"Authentication Bypass by Primary Weakness","cweId":"CWE-305","type":"CWE"}]}],"credits":[{"lang":"en","value":"Muhamad Arga Reksapati (HackerOne: nobcoder)","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/2026/03/11/3"}],"providerMetadata":{"orgId":"af854a3a-2127-422b-91ae-364da2661108","shortName":"CVE","dateUpdated":"2026-03-11T10:16:32.844Z"}},{"problemTypes":[{"descriptions":[{"type":"CWE","cweId":"CWE-305","lang":"en","description":"CWE-305 Authentication Bypass by Primary Weakness"}]}],"metrics":[{"cvssV3_1":{"scope":"UNCHANGED","version":"3.1","baseScore":6.5,"attackVector":"NETWORK","baseSeverity":"MEDIUM","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N","integrityImpact":"LOW","userInteraction":"NONE","attackComplexity":"LOW","availabilityImpact":"NONE","privilegesRequired":"NONE","confidentialityImpact":"LOW"}},{"other":{"type":"ssvc","content":{"timestamp":"2026-03-11T15:48:38.785522Z","id":"CVE-2026-3784","options":[{"Exploitation":"none"},{"Automatable":"yes"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"title":"CISA ADP Vulnrichment","providerMetadata":{"orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","shortName":"CISA-ADP","dateUpdated":"2026-03-11T15:48:41.725Z"}},{"x_adpType":"supplier","providerMetadata":{"orgId":"0b142b55-0307-4c5a-b3c9-f314f3fb7c5e","shortName":"siemens-SADP","dateUpdated":"2026-06-02T13:00:43.860Z"},"affected":[{"vendor":"Siemens","product":"RUGGEDCOM RST2428P","versions":[{"status":"affected","version":"0","lessThan":"V4.0","versionType":"custom"}],"defaultStatus":"unknown"}],"references":[{"url":"https://cert-portal.siemens.com/productcert/html/ssa-253495.html"}]}]}}