{"api_version":"1","generated_at":"2026-07-03T18:06:55+00:00","cve":"CVE-2026-11856","urls":{"html":"https://cve.report/CVE-2026-11856","api":"https://cve.report/api/cve/CVE-2026-11856.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-11856","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-11856"},"summary":{"title":"cross-origin Digest auth state leak","description":"Successfully using libcurl to do a transfer to a specific HTTP origin\n(`hostA`) with **Digest** authentication and then changing the origin to a\ndifferent one (`hostB`) for a second transfer, reusing the same handle, makes\nlibcurl wrongly pass on the  `Authorization:` header field meant for `hostA`,\nto `hostB`.","state":"PUBLISHED","assigner":"curl","published_at":"2026-07-03 07:16:23","updated_at":"2026-07-03 07:16:23"},"problem_types":["CWE-294 Authentication Bypass by 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s":"affected","version":"7.12.3","versionType":"semver"},{"lessThanOrEqual":"7.12.2","status":"affected","version":"7.12.2","versionType":"semver"},{"lessThanOrEqual":"7.12.1","status":"affected","version":"7.12.1","versionType":"semver"},{"lessThanOrEqual":"7.12.0","status":"affected","version":"7.12.0","versionType":"semver"},{"lessThanOrEqual":"7.11.2","status":"affected","version":"7.11.2","versionType":"semver"},{"lessThanOrEqual":"7.11.1","status":"affected","version":"7.11.1","versionType":"semver"},{"lessThanOrEqual":"7.11.0","status":"affected","version":"7.11.0","versionType":"semver"},{"lessThanOrEqual":"7.10.8","status":"affected","version":"7.10.8","versionType":"semver"},{"lessThanOrEqual":"7.10.7","status":"affected","version":"7.10.7","versionType":"semver"},{"lessThanOrEqual":"7.10.6","status":"affected","version":"7.10.6","versionType":"semver"}]}],"credits":[{"lang":"en","type":"finder","value":"jjchuck on hackerone"},{"lang":"en","type":"remediation developer","value":"Daniel Stenberg"}],"descriptions":[{"lang":"en","value":"Successfully using libcurl to do a transfer to a specific HTTP origin\n(`hostA`) with **Digest** authentication and then changing the origin to a\ndifferent one (`hostB`) for a second transfer, reusing the same handle, makes\nlibcurl wrongly pass on the  `Authorization:` header field meant for `hostA`,\nto `hostB`."}],"problemTypes":[{"descriptions":[{"description":"CWE-294 Authentication Bypass by Capture-replay","lang":"en"}]}],"providerMetadata":{"dateUpdated":"2026-07-03T06:13:31.661Z","orgId":"2499f714-1537-4658-8207-48ae4bb9eae9","shortName":"curl"},"references":[{"name":"json","url":"https://curl.se/docs/CVE-2026-11856.json"},{"name":"www","url":"https://curl.se/docs/CVE-2026-11856.html"},{"name":"issue","url":"https://hackerone.com/reports/3793260"}],"title":"cross-origin Digest auth state leak"}},"cveMetadata":{"assignerOrgId":"2499f714-1537-4658-8207-48ae4bb9eae9","assignerShortName":"curl","cveId":"CVE-2026-11856","datePublished":"2026-07-03T06:13:31.661Z","dateReserved":"2026-06-10T08:59:16.646Z","dateUpdated":"2026-07-03T06:13:31.661Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2026-07-03 07:16:23","lastModifiedDate":"2026-07-03 07:16:23","problem_types":["CWE-294 Authentication Bypass by Capture-replay"],"metrics":[],"configurations":[]},"legacy_mitre":{"record":{"CveYear":"2026","CveId":"11856","Ordinal":"1","Title":"cross-origin Digest auth state leak","CVE":"CVE-2026-11856","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"11856","Ordinal":"1","NoteData":"Successfully using libcurl to do a transfer to a specific HTTP origin\n(`hostA`) with **Digest** authentication and then changing the origin to a\ndifferent one (`hostB`) for a second transfer, reusing the same handle, makes\nlibcurl wrongly pass on the  `Authorization:` header field meant for `hostA`,\nto `hostB`.","Type":"Description","Title":"cross-origin Digest auth state leak"}]}}}