CVE.org (no NVD analysis yet)· CNA VulnCheck

CVE-2026-116191: Rclone before 1.75.2 Path Traversal via serve webdav MKCOL

Noroxi assessment

Priority: Monitor (action score 34/100)

Public proof-of-concept code exists (GitHub); there is no record of exploitation in the wild.
Probability of exploitation in the next 30 days: 0.39% (FIRST EPSS).
Anyone who can reach it over the internet can trigger it. No account or password is required. No user action is required. No special conditions are required; it is repeatable.
According to CISA the attack is automatable: targets can be found by mass scanning.
Fixed version: rclone rclone 1.75.2.

Low priority for now. Upgrade to rclone rclone 1.75.2 or later.

Generated automatically from the record's data: CVSS (NVD and CNA), CISA KEV and SSVC, FIRST EPSS, exploit sources, fixed versions. How we calculate it

Primary sources: NVD · CVE.org · FIRST EPSS

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.

HighCVSS 8.7 · v4.0—Proof of concept Fix available

EUVD-2026-109449

Published: Oct 25, 2026
Updated: Oct 27, 2026
EPSS: 0.3% · 33th percentile
CWE: CWE-22

Report tools

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Action score

Monitor

Low priority for now.

CVSS: 34 / 40 · 8.7 / 10
CISA KEV: 0 / 30 · Not listed
EPSS: 0 / 30 · 0.3%

CISA SSVC decision

Exploitation: none
Automatable: yes
Technical impact: partial

Vulnrichment: CISA's decision-tree inputs.

CNA vs NVD score

NVD: —
CNA · VulnCheck: 8.7; NVD has not scored this yet; the score shown is the CNA’s.

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N

The score given by the assigning authority versus NVD’s independent score. A gap means the severity is contested.

Get told when this record changes

Not in KEV: no record of exploitation in the wild
Proof of concept exists, no weaponized module
A fix has been released

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Noroxi analysis

What does it mean in your environment?

The assessment above is generated automatically from the record's data; it doesn't know your environment. Our team verifies on your systems whether this vulnerability is actually exploitable and which mitigation is enough.

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Affected systems

Is your version affected?

Pick the product and type the version you run. It's compared with this record's version ranges in your browser; the version isn't sent anywhere.

Vendor	Product	CPE
rclone	rclone	cpe:2.3:a:rclone:rclone

Affected versions

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

rclone rclonebefore 1.75.2

Versions reported by the vendor

Affected version ranges reported by the assigning authority (VulnCheck). Independent of NVD's CPE analysis and usually ahead of it.

rclone rclone
- 1.75.2not affected
- before 1.75.2affected · semver

Package-level exposure

OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.

Ecosystem	Package	Affected range	Fix
Alpine:v3.24	rclone	before 1.75.2-r0	1.75.2-r0
Debian:12	rclone	from 0	—

Same product

rclone: all records

Other highest-scoring records for the same primary product.

CVE-2026-41176Rclone: Unauthenticated options/set allows runtime auth bypass, leading to sensitive operations and command execution
46Plan
CVE-2026-88018rclone serve s3: --auth-proxy without --auth-key authenticates nobody - full SigV4 signature bypass
39Monitor
CVE-2026-49980Rclone: Unauthenticated command execution in `rclone rcd --rc-serve` via inline remote instantiation, bypassing CVE-2026-41179 fix
39Monitor

Published before and after this one in the same product

← EarlierCVE-2026-116189Oct 25, 2026 · rclone 1.55.0 before 1.75.2 selfupdate Signature Verification Bypass via SHA256SUMS
30Monitor
← EarlierCVE-2026-116190Oct 25, 2026 · rclone v1.56.0 before v1.75.2 WebDAV Credential Header Leak on Redirect
25Monitor
Later →CVE-2026-116192Oct 25, 2026 · rclone from 1.37 before 1.74.2 SSRF via --rc-serve scheme-relative remote roots
32Monitor

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

Product / package	Fixed version	Source
rclone rclone	1.75.2	Vendor (CNA)
alpine:rclone	1.75.2-r0 · Alpine:v3.24	Package registry (OSV)

Exploit status

Proof of concept available

A public proof of concept or detection signature exists. Exploit knowledge is out there; don't delay patching.

Evidence

Proof-of-concept repository on GitHub ×1

Noroxi does not host or link to exploit code. Metasploit module names and Nuclei template ids are shown (names, not code); Exploit-DB entries and PoC repositories are given as counts only.

Public exploit evidence
Source	Kind	Date
Proof-of-concept repository on GitHub	stars:0	2026-10-25

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

First PoCOct 25, 2026-1 d
PublishedOct 25, 2026
Fix recordedOct 25, 2026same day
TodayNov 9, 2026+15 d

EPSS, last 120 days

FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).

Patch and commit links

Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.

No commit or PR link among the references.

Credits

All researchers

Finders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.

euriconicacioreporter
manus-pifinder
ncwfinder

Variant candidates

Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.

CVE-2026-59733103 days apartrclone `serve restic --private-repos` authorization bypass: `..` in the URL path lets an authenticated user read, overwrite and delete other users' repositories
35Monitor
CVE-2026-7130981 days apartrclone: Incomplete path validation allows backend root escape in serve restic
34Monitor
CVE-2026-1161950 days apartRclone before 1.75.2 Path Traversal via translateLink .rclonelink Suffix Trim
28Monitor
CVE-2026-7978161 days apartrclone serve s3 Path Traversal via dot-dot object keys
27Monitor
CVE-2026-7131381 days apartrclone: Local Encoding Path Traversal
27Monitor
CVE-2026-8801445 days apartrclone archive/zip: Zip Slip via unsanitized zip entry names lets a malicious archive escape its own namespace
25Monitor

Chain candidates

An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.

—

Bug bounty scope

No known public program.

Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).

Technical details

Attack conditions

Anyone who can reach it over the internet can trigger it.
No account or password is required.
No user action is required.
No special conditions are required; it is repeatable.

If successful

Confidentiality
Integrity
Availability

Attack vector: Network
Attack complexity: Low
Privileges required: None
User interaction: None
Scope: X

Weakness class (CWE)

CWE-22 · Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')

CVSS vector

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

nvd-secondary

Root cause

A user-supplied file name is joined with the allowed directory, but the result is never checked to confirm it is still inside that directory.

The bug in code

The whole CWE-22 class

A representative example of this vulnerability class. Not the vendor's source code; it shows the faulty pattern and its fix.

Vulnerable

1const file = path.join(ROOT, req.query.name);
2res.sendFile(file);

Fixed

1const file = path.resolve(ROOT, req.query.name);
2if (!file.startsWith(ROOT + path.sep)) {
3  return res.sendStatus(400);
4}
5res.sendFile(file);

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

Attack patterns (CAPEC)

ATT&CK techniques

—

Change log

SSVC exploitation— → noneOct 26, 2026, 6:07 PM UTC
Exploit maturitynone → pocOct 26, 2026, 3:38 AM UTC
Exploit maturity— → noneOct 25, 2026, 3:07 PM UTC
Fix✗ → ✓Oct 25, 2026, 3:07 PM UTC

For records you follow, these changes also arrive as notifications. →

References

github.com/rclone/rclone/security/advisories/GHSA-44pm-2q5p-fm63

Show all references (1 more)

www.vulncheck.com/advisories/rclone-before-1.75.2-path-traversal-via-serve-webdav-mkcol

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

All records