{"cve":"CVE-2026-79782","nvd":{"published":"2026-08-25T16:17:30.217","modified":"2026-09-10T20:46:19.780","status":"Awaiting Analysis","description":"rclone before 1.74.4 fails to strip the X-Amz-Security-Token header when an S3 redirect changes scheme from HTTPS to HTTP on the same host. Attackers can intercept plaintext HTTP traffic to capture AWS STS session tokens sent in request headers.","cvss_v4":{"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N","score":9.3},"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N","score":3.1},"cwes":["CWE-319"],"references":["https://github.com/rclone/rclone/security/advisories/GHSA-gx4c-2hqx-cw2r","https://www.vulncheck.com/advisories/rclone-before-security-token-disclosure-via-https-to-http-redirect"],"products":[],"source":"nvd","synced_at":"2026-10-19T22:50:17.453294893+00:00"},"epss":{"cve":"CVE-2026-79782","score":0.00132,"percentile":0.02741,"date":"2026-10-31"},"kev":null,"osv":[{"id":"GHSA-gx4c-2hqx-cw2r","url":"https://osv.dev/vulnerability/GHSA-gx4c-2hqx-cw2r","summary":"rclone: S3 backend does not strip X-Amz-Security-Token on a same-host HTTPS->HTTP redirect","modified":"2026-09-25T14:25:42.819076733Z","packages":[{"ecosystem":"Go","name":"github.com/rclone/rclone","purl":"pkg:golang/github.com/rclone/rclone","ranges":["<1.74.4"],"fixed":["1.74.4"]}]},{"id":"GO-2026-6196","url":"https://osv.dev/vulnerability/GO-2026-6196","summary":"S3 session token leakage on HTTPS to HTTP redirect in github.com/rclone/rclone","modified":"2026-09-25T14:25:42.819076733Z","packages":[{"ecosystem":"Go","name":"github.com/rclone/rclone","purl":"pkg:golang/github.com/rclone/rclone","ranges":["<1.74.4"],"fixed":["1.74.4"]}]}],"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."]}