{"cve":"CVE-2026-79780","nvd":{"published":"2026-08-25T16:17:29.947","modified":"2026-09-10T20:46:19.780","status":"Awaiting Analysis","description":"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.","cvss_v4":{"vector":"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","score":6.0},"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N","score":5.3},"cwes":["CWE-200"],"references":["https://github.com/rclone/rclone/security/advisories/GHSA-8mxv-9xhp-86h4","https://www.vulncheck.com/advisories/rclone-before-credential-exposure-via-s3-redirect","https://github.com/rclone/rclone/security/advisories/GHSA-8mxv-9xhp-86h4"],"products":[],"source":"nvd","synced_at":"2026-10-19T22:50:17.453294893+00:00"},"epss":{"cve":"CVE-2026-79780","score":0.00147,"percentile":0.03909,"date":"2026-10-31"},"kev":null,"osv":[{"id":"GHSA-8mxv-9xhp-86h4","url":"https://osv.dev/vulnerability/GHSA-8mxv-9xhp-86h4","summary":"rclone: S3 Redirect Sanitization Omits IBM IAM Bearer Tokens and SSE-C Keys","modified":"2026-09-25T14:25:35.724812560Z","packages":[{"ecosystem":"Go","name":"github.com/rclone/rclone","purl":"pkg:golang/github.com/rclone/rclone","ranges":["<1.75.0"],"fixed":["1.75.0"]}]},{"id":"GO-2026-6188","url":"https://osv.dev/vulnerability/GO-2026-6188","summary":"S3 redirect sanitization omits sensitive headers in github.com/rclone/rclone","modified":"2026-09-25T14:25:35.724812560Z","packages":[{"ecosystem":"Go","name":"github.com/rclone/rclone","purl":"pkg:golang/github.com/rclone/rclone","ranges":["<1.75.0"],"fixed":["1.75.0"]}]}],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}