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Fencer Vulns
high 7.1

CVE-2026-88016 json

rclone: Directory metadata (chmod/chown/chtimes) applied through a planted symlink in rclone local --links escapes the destination

published 2026-09-10 59 d ago modified 2026-09-25 45 d ago also BIT-rclone-2026-88016 , EUVD-2026-75576 , GHSA-f8g7-2xjc-7mfh , GO-2026-6459

cvss
7.1
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.2%
EPSS 0.2% chance of exploitation in 30 days, percentile 8%
public exploits
0
none known

Summary

rclone is a command-line program to sync files and directories to and from different cloud storage providers. Prior to 1.75.1, when backend/local runs with --links, a source .rclonelink object can plant a symlink in the destination and later directory metadata is applied through that path. MkdirMetadata, writeMetadataToFile, and setTimes operate when Directory.translatedLink=false, so os.Chown, os.Chmod, os.Chtimes, and birth-time handling can bypass os.Root confinement and follow the symlink. An attacker controlling source contents can therefore apply selected ownership, permissions, modification times, or birth times to a file or directory outside the destination, with --metadata required for chmod and chown while modification time is applied by the normal directory workflow. This issue is fixed in version 1.75.1.

Patch / fix

  • go github.com/rclone/rclone 1.75.1
  • bitnami rclone 1.75.1
  • rclone rclone 1.75.1
  • govulncheck-vulndb SLES 16.0, SLES for SAP applications 16.0 0.0.20260916T180043-160000.1.1

suse advisories SUSE-SU-2026:23855-1SUSE-SU-2026:23863-1

  • govulncheck-vulndb openSUSE Leap 16.0 0.0.20260916T180043-160000.1.1

opensuse advisories openSUSE-SU-2026:21897-1

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2026-88016 updated cvss 7.1

rclone: rclone: Directory metadata escape via planted symlink allows unauthorized file modification

  • Red Hat All currently supported Red Hat products
    not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

CISA SSVC

Exploitation
Proof of concept is public
Automatable
no
Technical impact
partial
Assessed
54 d ago

Exploit prediction

0.19% chance of exploitation in the next 30 days, higher than 8% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • github.com https://github.com/rclone/rclone/security/advisories/GHSA-f8g7-2xjc-7mfh referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
CNA 3.1 7.1 CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:C/C:L/I:H/A:L
GitHub 3.1 6.5 CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:C/C:N/I:H/A:L
OSV 3.1 7.1 CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:C/C:L/I:H/A:L

Affected packages

ecosystem package affected fixed in
go github.com/rclone/rclone
<1.75.1
1.75.1
bitnami rclone
<1.75.1
1.75.1

Affected products

  • rclone rclone

Classification

Weakness
  • CWE-59 Improper Link Resolution Before File Access
  • CWE-281 Improper Preservation of Permissions

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.