CVE-2026-79780

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-79780", "assignerOrgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10", "state": "PUBLISHED", "assignerShortName": "VulnCheck", "dateReserved": "2026-08-25T14:32:37.762Z", "datePublished": "2026-08-25T15:16:09.789Z", "dateUpdated": "2026-08-25T16:07:21.266Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10", "shortName": "VulnCheck", "dateUpdated": "2026-08-25T15:16:09.789Z"}, "datePublic": "2026-07-31T00:00:00.000Z", "title": "rclone before v1.75.0 Credential Exposure via S3 Redirect", "descriptions": [{"lang": "en", "value": "rclone before v1.75.0 fails to sanitize IBM IAM bearer tokens and SSE-C encryption keys during S3 redirect callbacks, allowing credentials to be preserved across scheme or host changes. Attackers observing network traffic from a trusted endpoint can capture reusable IBM IAM tokens on same-host HTTPS-to-HTTP downgrades or SSE-C keys on cross-origin redirects to access protected S3 objects."}], "problemTypes": [{"descriptions": [{"lang": "en", "description": "Exposure of Sensitive Information to an Unauthorized Actor", "cweId": "CWE-200", "type": "CWE"}]}], "affected": [{"vendor": "rclone", "product": "rclone", "defaultStatus": "unaffected", "packageURL": "pkg:golang/github.com/rclone/rclone", "versions": [{"version": "0", "status": "affected", "versionType": "semver", "lessThan": "1.75.0"}, {"version": "1.75.0", "status": "unaffected", "versionType": "semver"}]}], "cpeApplicability": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:a:rclone:rclone:*:*:*:*:*:*:*:*", "versionEndExcluding": "1.75.0"}]}]}], "metrics": [{"format": "CVSS", "cvssV4_0": {"version": "4.0", "vectorString": "CVSS:4.0/AV:A/AC:H/AT:P/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N", "attackVector": "ADJACENT", "attackComplexity": "HIGH", "attackRequirements": "PRESENT", "privilegesRequired": "NONE", "userInteraction": "NONE", "vulnConfidentialityImpact": "HIGH", "vulnIntegrityImpact": "NONE", "vulnAvailabilityImpact": "NONE", "subConfidentialityImpact": "NONE", "subIntegrityImpact": "NONE", "subAvailabilityImpact": "NONE", "baseScore": 6, "baseSeverity": "MEDIUM"}}, {"format": "CVSS", "cvssV3_1": {"version": "3.1", "vectorString": "CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N", "attackVector": "ADJACENT_NETWORK", "attackComplexity": "HIGH", "privilegesRequired": "NONE", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "HIGH", "integrityImpact": "NONE", "availabilityImpact": "NONE", "baseScore": 5.3, "baseSeverity": "MEDIUM"}}], "references": [{"url": "https://github.com/rclone/rclone/security/advisories/GHSA-8mxv-9xhp-86h4", "tags": ["vendor-advisory"], "name": "GitHub Security Advisory (GHSA-8mxv-9xhp-86h4)"}, {"name": "VulnCheck Advisory: rclone before v1.75.0 Credential Exposure via S3 Redirect", "tags": ["third-party-advisory"], "url": "https://www.vulncheck.com/advisories/rclone-before-credential-exposure-via-s3-redirect"}], "credits": [{"lang": "en", "value": "cyberlanc3r", "type": "reporter"}, {"lang": "en", "value": "ncw", "type": "finder"}], "x_generator": {"engine": "vulncheck-endgame"}}, "adp": [{"references": [{"url": "https://github.com/rclone/rclone/security/advisories/GHSA-8mxv-9xhp-86h4", "tags": ["exploit"]}], "metrics": [{"other": {"type": "ssvc", "content": {"timestamp": "2026-08-25T16:06:59.260877Z", "id": "CVE-2026-79780", "options": [{"Exploitation": "poc"}, {"Automatable": "no"}, {"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": "2026-08-25T16:07:21.266Z"}}]}}

{"dataType": "CVE_RECORD", "containers": {"adp": [{"title": "CISA ADP Vulnrichment", "metrics": [{"other": {"type": "ssvc", "content": {"id": "CVE-2026-79780", "role": "CISA Coordinator", "options": [{"Exploitation": "poc"}, {"Automatable": "no"}, {"Technical Impact": "partial"}], "version": "2.0.3", "timestamp": "2026-08-25T16:06:59.260877Z"}}}], "references": [{"url": "https://github.com/rclone/rclone/security/advisories/GHSA-8mxv-9xhp-86h4", "tags": ["exploit"]}], "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-08-25T16:07:18.244Z"}}], "cna": {"title": "rclone before v1.75.0 Credential Exposure via S3 Redirect", "credits": [{"lang": "en", "type": "reporter", "value": "cyberlanc3r"}, {"lang": "en", "type": "finder", "value": "ncw"}], "metrics": [{"format": "CVSS", "cvssV4_0": {"version": "4.0", "baseScore": 6, "attackVector": "ADJACENT", "baseSeverity": "MEDIUM", "vectorString": "CVSS:4.0/AV:A/AC:H/AT:P/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N", "userInteraction": "NONE", "attackComplexity": "HIGH", "attackRequirements": "PRESENT", "privilegesRequired": "NONE", "subIntegrityImpact": "NONE", "vulnIntegrityImpact": "NONE", "subAvailabilityImpact": "NONE", "vulnAvailabilityImpact": "NONE", "subConfidentialityImpact": "NONE", "vulnConfidentialityImpact": "HIGH"}}, {"format": "CVSS", "cvssV3_1": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 5.3, "attackVector": "ADJACENT_NETWORK", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "HIGH", "availabilityImpact": "NONE", "privilegesRequired": "NONE", "confidentialityImpact": "HIGH"}}], "affected": [{"vendor": "rclone", "product": "rclone", "versions": [{"status": "affected", "version": "0", "lessThan": "1.75.0", "versionType": "semver"}, {"status": "unaffected", "version": "1.75.0", "versionType": "semver"}], "packageURL": "pkg:golang/github.com/rclone/rclone", "defaultStatus": "unaffected"}], "datePublic": "2026-07-31T00:00:00.000Z", "references": [{"url": "https://github.com/rclone/rclone/security/advisories/GHSA-8mxv-9xhp-86h4", "name": "GitHub Security Advisory (GHSA-8mxv-9xhp-86h4)", "tags": ["vendor-advisory"]}, {"url": "https://www.vulncheck.com/advisories/rclone-before-credential-exposure-via-s3-redirect", "name": "VulnCheck Advisory: rclone before v1.75.0 Credential Exposure via S3 Redirect", "tags": ["third-party-advisory"]}], "x_generator": {"engine": "vulncheck-endgame"}, "descriptions": [{"lang": "en", "value": "rclone before v1.75.0 fails to sanitize IBM IAM bearer tokens and SSE-C encryption keys during S3 redirect callbacks, allowing credentials to be preserved across scheme or host changes. Attackers observing network traffic from a trusted endpoint can capture reusable IBM IAM tokens on same-host HTTPS-to-HTTP downgrades or SSE-C keys on cross-origin redirects to access protected S3 objects."}], "problemTypes": [{"descriptions": [{"lang": "en", "type": "CWE", "cweId": "CWE-200", "description": "Exposure of Sensitive Information to an Unauthorized Actor"}]}], "cpeApplicability": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:rclone:rclone:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "1.75.0"}], "operator": "OR"}]}], "providerMetadata": {"orgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10", "shortName": "VulnCheck", "dateUpdated": "2026-08-25T15:16:09.789Z"}}}, "cveMetadata": {"cveId": "CVE-2026-79780", "state": "PUBLISHED", "dateUpdated": "2026-08-25T16:07:21.266Z", "dateReserved": "2026-08-25T14:32:37.762Z", "assignerOrgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10", "datePublished": "2026-08-25T15:16:09.789Z", "assignerShortName": "VulnCheck"}, "dataVersion": "5.2"}

{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "packageURL": "pkg:golang/github.com/rclone/rclone", "product": "rclone", "vendor": "rclone", "versions": [{"lessThan": "1.75.0", "status": "affected", "version": "0", "versionType": "semver"}, {"status": "unaffected", "version": "1.75.0", "versionType": "semver"}]}], "source": "disclosure@vulncheck.com"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "rclone before v1.75.0 fails to sanitize IBM IAM bearer tokens and SSE-C encryption keys during S3 redirect callbacks, allowing credentials to be preserved across scheme or host changes. Attackers observing network traffic from a trusted endpoint can capture reusable IBM IAM tokens on same-host HTTPS-to-HTTP downgrades or SSE-C keys on cross-origin redirects to access protected S3 objects."}], "id": "CVE-2026-79780", "lastModified": "2026-09-10T20:46:19.780", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "HIGH", "attackVector": "ADJACENT_NETWORK", "availabilityImpact": "NONE", "baseScore": 5.3, "baseSeverity": "MEDIUM", "confidentialityImpact": "HIGH", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N", "version": "3.1"}, "exploitabilityScore": 1.6, "impactScore": 3.6, "source": "disclosure@vulncheck.com", "type": "Secondary"}], "cvssMetricV40": [{"cvssData": {"Automatable": "NOT_DEFINED", "Recovery": "NOT_DEFINED", "Safety": "NOT_DEFINED", "attackComplexity": "HIGH", "attackRequirements": "PRESENT", "attackVector": "ADJACENT", "availabilityRequirement": "NOT_DEFINED", "baseScore": 6.0, "baseSeverity": "MEDIUM", "confidentialityRequirement": "NOT_DEFINED", "exploitMaturity": "NOT_DEFINED", "integrityRequirement": "NOT_DEFINED", "modifiedAttackComplexity": "NOT_DEFINED", "modifiedAttackRequirements": "NOT_DEFINED", "modifiedAttackVector": "NOT_DEFINED", "modifiedPrivilegesRequired": "NOT_DEFINED", "modifiedSubAvailabilityImpact": "NOT_DEFINED", "modifiedSubConfidentialityImpact": "NOT_DEFINED", "modifiedSubIntegrityImpact": "NOT_DEFINED", "modifiedUserInteraction": "NOT_DEFINED", "modifiedVulnAvailabilityImpact": "NOT_DEFINED", "modifiedVulnConfidentialityImpact": "NOT_DEFINED", "modifiedVulnIntegrityImpact": "NOT_DEFINED", "privilegesRequired": "NONE", "providerUrgency": "NOT_DEFINED", "subAvailabilityImpact": "NONE", "subConfidentialityImpact": "NONE", "subIntegrityImpact": "NONE", "userInteraction": "NONE", "valueDensity": "NOT_DEFINED", "vectorString": "CVSS:4.0/AV:A/AC:H/AT:P/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X", "version": "4.0", "vulnAvailabilityImpact": "NONE", "vulnConfidentialityImpact": "HIGH", "vulnIntegrityImpact": "NONE", "vulnerabilityResponseEffort": "NOT_DEFINED"}, "source": "disclosure@vulncheck.com", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-79780", "options": [{"exploitation": "poc"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2026-08-25T16:06:59.260877Z", "version": "2.0.3"}}]}, "published": "2026-08-25T16:17:29.947", "references": [{"source": "disclosure@vulncheck.com", "url": "https://github.com/rclone/rclone/security/advisories/GHSA-8mxv-9xhp-86h4"}, {"source": "disclosure@vulncheck.com", "url": "https://www.vulncheck.com/advisories/rclone-before-credential-exposure-via-s3-redirect"}, {"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "url": "https://github.com/rclone/rclone/security/advisories/GHSA-8mxv-9xhp-86h4"}], "sourceIdentifier": "disclosure@vulncheck.com", "vulnStatus": "Awaiting Analysis", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-200"}], "source": "disclosure@vulncheck.com", "type": "Secondary"}]}

{"bugzilla": {"description": "github.com/rclone/rclone: rclone: Information disclosure via S3 redirect callbacks", "id": "2523578", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2523578"}, "csaw": false, "cvss3": {"cvss3_base_score": "5.3", "cvss3_scoring_vector": "CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N", "status": "draft"}, "cwe": "CWE-201", "details": ["rclone before v1.75.0 fails to sanitize IBM IAM bearer tokens and SSE-C encryption keys during S3 redirect callbacks, allowing credentials to be preserved across scheme or host changes. Attackers observing network traffic from a trusted endpoint can capture reusable IBM IAM tokens on same-host HTTPS-to-HTTP downgrades or SSE-C keys on cross-origin redirects to access protected S3 objects.", "A flaw was found in rclone. The application fails to properly sanitize IBM IAM bearer tokens and Server-Side Encryption with Customer-Provided Keys (SSE-C) encryption keys during S3 redirect callbacks. This allows credentials to be preserved across scheme or host changes. A remote attacker observing network traffic from a trusted endpoint could capture reusable IBM IAM tokens on same-host HTTPS-to-HTTP downgrades or SSE-C keys on cross-origin redirects, leading to information disclosure and potential unauthorized access to protected S3 objects."], "name": "CVE-2026-79780", "package_state": [{"cpe": "cpe:/a:redhat:cryostat:4", "fix_state": "Fix deferred", "package_name": "cryostat/cryostat-storage-rhel9", "product_name": "Cryostat 4"}, {"cpe": "cpe:/a:redhat:acm:2", "fix_state": "Fix deferred", "package_name": "rhacm2/volsync-rhel9", "product_name": "Red Hat Advanced Cluster Management for Kubernetes 2"}], "public_date": "2026-08-25T15:16:09Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-79780\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-79780\nhttps://github.com/rclone/rclone/security/advisories/GHSA-8mxv-9xhp-86h4\nhttps://www.vulncheck.com/advisories/rclone-before-credential-exposure-via-s3-redirect"], "threat_severity": "Moderate"}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[0,1.75.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "1.75.0"}}], "enrichment": {"confidence": 95.0, "confidence_source": "inferred", "scores": [{"score": 95.0, "source": "inferred"}, {"score": 100.0, "source": "matching"}]}, "product": "rclone", "vendor": "rclone"}], "created": "2026-08-25T17:00:04.117711+00:00", "updated": "2026-08-31T14:15:06.431850+00:00", "vendors": ["rclone", "rclone$PRODUCT$rclone"]}