Unauthenticated administrative access via whitelist prefix match
Published Mar 16, 2020 · Updated Oct 21, 2025
Authentication bypass in Unraid 6.8.0 allows remote attackers to access the administrative interface via a crafted request. The auth_request.php whitelist performs a prefix comparison against the request URI, so a path appended to an allowed asset still returns HTTP 200 and reaches protected WebGUI routes. No credentials or user interaction are required, and the bypass exposes administrative pages and sensitive data, including a CSRF token.
Summary
What happened
Authentication bypass in Unraid 6.8.0 allows remote attackers to access the administrative interface via a crafted request. The auth_request.php whitelist performs a prefix comparison against the request URI, so a path appended to an allowed asset still returns HTTP 200 and reaches protected WebGUI routes. No credentials or user interaction are required, and the bypass exposes administrative pages and sensitive data, including a CSRF token.
The record
- CVE
- CVE-2020-5849
- Published
- Mar 16, 2020
- Updated
- Oct 21, 2025
- Vendor
- Unknown vendor
- Product
- Unknown product
- Classifications
- CWE-697, T1190
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- Mar 16, 2020CVE publishedPublication date reported by the CVE source.
- Oct 21, 2025Record updatedLatest update available in the CVE record.
Exploitability
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What is affected?
Affected products and versions are unavailable in this record.
Attacks
What attackers are doing with it
Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.
Public exploit references
- SysDream authentication-bypass requestfunctional · demonstrated
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Reported exploitation
- CISA Known Exploited Vulnerabilities catalog listingknown exploited catalog
Technologies
Your stack
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Your stack
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