Read the docs
TI-2026-55259 Aliases CVE-2026-79782GHSA-mwgh-564g-j9ww

rclone before 1.74.4 Security Token Disclosure via HTTPS to HTTP Redirect

Priority LOW 39CWE-319Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Attack requirements
None
Impact type
Information disclosure
Confidentiality · integrity · availability
High · High · High
Fix status
Fixed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-319.

Summary

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.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00132 2nd percentileScored 2026-11-07
Fix Fixed rclone (rclone): 1.74.4

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
rclonerclonebefore 1.74.41.74.4Patch availableCNA
  • rclone Vendorrclone Affected before 1.74.4 Fixed in 1.74.4 Patch available CNA

CPE names Threatist (inferred) · 1

Inferred from how NVD named this product before; not given by a source.

CPEVersionsRoleVendor
cpe:2.3:a:rclone:rclone:*:*:*:*:*:*:*:*——rclone
  • cpe:2.3:a:rclone:rclone:*:*:*:*:*:*:*:* Versions — — ·rclone

Remediation

  • Fix · CNA rclone (rclone) Fixed in 1.74.4

Fixed in the same release

Records fixed by the same vendor advisory or release, as the CNA lists them.

  • Release ·

    rclone 1.74.4

    3 records Highest priority Priority HIGH 1 HIGH, 1 MEDIUM, 1 LOW

    Other records, highest priority first

    • TI-2026-55258 rclone serve s3 Path Traversal via dot-dot object keysPriority HIGH 70
    • TI-2026-55260 rclone before 1.74.4 Privilege Escalation via setuid MetadataPriority MEDIUM 44
    Show all 3 records →

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-79782
  2. 2026-10-03 Alias added: GHSA-mwgh-564g-j9ww

References

Advisory 1

  • TI-2026-60044 rclone serve s3: --auth-proxy without --auth-key authenticates nobody - full SigV4 signature bypass CVSS 3.1CRITICAL 9.8
  • TI-2026-29802 RClone: Unauthenticated operations/fsinfo allows attacker-controlled backend instantiation and local command execution CVSS 4.0CRITICAL 9.2
  • TI-2026-29799 Rclone: Unauthenticated options/set allows runtime auth bypass, leading to sensitive operations and command execution CVSS 4.0CRITICAL 9.2
  • TI-2026-60064 rclone: RC per-server auth-proxy bypass CVSS 3.1CRITICAL 9.1
  • TI-2026-42602 Path traversal in rclone CVSS 3.1HIGH 8.8
  • TI-2026-60065 rclone: S3 multipart declared-length memory exhaustion CVSS 3.1HIGH 7.5
See all 43 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences