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TI-2026-80209 Aliases CVE-2026-116191GHSA-4fcc-gp7q-gf9r

Path traversal in rclone WebDAV server lets attackers write files

Priority MEDIUM 44CWE-22Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Attack requirements
None
Impact type
—
Confidentiality · integrity · availability
None · High · None
Fix status
Partial Red Hat: 1 without a fix

Attack profile from CVSS 4.0 · CNA. Fix status from CNA and Red Hat.

Summary

Rclone before 1.75.2 contains a path traversal flaw in its serve webdav component (CWE-22). An unvalidated '..' path component lets an unauthenticated remote attacker write above the served root. The attacker can create, overwrite, or delete files belonging to other tenants.

Written with Claude Haiku 5.5 from the sources below · 2026-10-29

Description from the CNA

Rclone before 1.75.2 contains a path traversal vulnerability in serve webdav that allows unauthenticated attackers to write above the served root by sending an unvalidated '..' path component. Attackers can send MKCOL /.. to plant a VFS node, then PUT, MOVE, COPY, or MKCOL to create, overwrite, or delete files belonging to other tenants.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00393 33rd percentileScored 2026-11-07
Fix Partial rclone (rclone): 1.75.2Red Hat: 1 without a fix

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
Yes
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 1.75.21.75.2Patch availableCNA
  • rclone Vendorrclone Affected before 1.75.2 Fixed in 1.75.2 Patch available CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:rclone:rclone:*:*:*:*:*:*:*:*before 1.75.2Vulnerablerclone
  • cpe:2.3:a:rclone:rclone:*:*:*:*:*:*:*:* Versions before 1.75.2 Vulnerable ·rclone

Remediation

Upgrade rclone to version 1.75.2. Red Hat lists Cryostat 4 as affected with no fix available.

Written with Claude Haiku 5.5 from the sources below · 2026-10-29

  • Fix · CNA rclone (rclone) Fixed in 1.75.2

Fixed in the same release

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

  • Release ·

    rclone 1.75.2

    9 records Highest priority Priority HIGH 4 HIGH, 2 MEDIUM, 3 LOW

    Other records, highest priority first

    • TI-2026-80211 Authentication bypass in rclone serve webdav via OPTIONS requestsPriority HIGH 70
    • TI-2026-80206 Integer overflow in rclone serve s3 lets attackers exhaust memoryPriority HIGH 70
    • TI-2026-80207 Signature verification bypass in rclone selfupdatePriority HIGH 69
    Show all 9 records →

Vendor assessments

Red Hat

Red Hat rating: Important. Red Hat's page for this CVE →

ProductStatusPlan or fix
Cryostat 4AffectedNo fix yet
Not affected: 1 product
  • Red Hat Advanced Cluster Management for Kubernetes 2

Timeline

  1. 2026-10-25 Threatist record created from CVE-2026-116191
  2. 2026-10-26 Affected versions changed · Red Hat
  3. 2026-10-26 CVSS score added · Red Hat
  4. 2026-10-26 CISA SSVC decision points changed
  5. 2026-10-27 Alias added: GHSA-4fcc-gp7q-gf9r
  6. 2026-10-29 Affected versions changed · Red Hat

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-2026-42602 Path traversal in rclone CVSS 3.1HIGH 8.8
  • TI-2026-39407 rclone: Unvalidated symlink target in local `--links` — arbitrary file write from an untrusted remote CVSS 3.1HIGH 8.8
  • TI-2026-80211 Authentication bypass in rclone serve webdav via OPTIONS requests CVSS 4.0MEDIUM 6.9
See all 23 →

Sources

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