Low severity · published Aug 25, 2026
CVE-2026-79782
rclone before 1.74.4 Security Token Disclosure via HTTPS to HTTP Redirect
3.1
CVSS
0.1%
EPSS
No
On KEV
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 vector
CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N
Attack vector
Adjacent
Complexity
High
Privileges
None
User interaction
None
Confidentiality
Low
Integrity
None
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.1% · higher than 3% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
RC
rclone · rclone
before 1.74.4 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-79782
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-79782
github.com
https://github.com/rclone/rclone/security/advisories/GHSA-gx4c-2hqx-cw2r
www.vulncheck.com
https://www.vulncheck.com/advisories/rclone-before-security-token-disclosure-via-https-to-http-redirect
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