Privilege escalation via lax SameSite authentication cookie
Published Aug 26, 2026 · Updated Aug 27, 2026
Cross-site request forgery in Lime Technology Unraid OS 6.12.14 and earlier allows remote attackers to initiate authenticated GET requests. The authentication cookie omits an explicit SameSite attribute, so browsers default it to Lax and attach it to cross-site top-level navigations. Exploitation requires an authenticated victim to visit attacker-controlled content while the web interface is reachable; chained reflected XSS can install a plugin and execute code as root.
Summary
What happened
Cross-site request forgery in Lime Technology Unraid OS 6.12.14 and earlier allows remote attackers to initiate authenticated GET requests. The authentication cookie omits an explicit SameSite attribute, so browsers default it to Lax and attach it to cross-site top-level navigations. Exploitation requires an authenticated victim to visit attacker-controlled content while the web interface is reachable; chained reflected XSS can install a plugin and execute code as root.
The record
- CVE
- CVE-2025-56798
- Published
- Aug 26, 2026
- Updated
- Aug 27, 2026
- Vendor
- Unknown vendor
- Product
- Unknown product
- Classifications
- CWE-352, T1189
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- Aug 26, 2026CVE publishedPublication date reported by the CVE source.
- Aug 27, 2026Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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What is affected?
Affected products and versions are unavailable in this record.
Published CVSS scores
CVSS describes severity. EPSS estimates exploitation probability.
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
- Raiding Unraid browser attack-chain proof of conceptproof of concept · demonstrated
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Technologies
Your stack
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Your stack
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