CVE-2026-63771
Adminer < 5.4.3 Cookie Injection via X-Forwarded-Prefix Header
Description
Adminer before 5.4.3 contains a cookie injection vulnerability that allows attackers to manipulate cookie attributes by injecting arbitrary values through the unsanitized X-Forwarded-Prefix HTTP header used in Set-Cookie path attributes. Attackers can exploit a misconfigured reverse proxy to downgrade SameSite protection and enable cross-origin authenticated requests, bypassing cookie security controls.
No summary for this CVE yet.
CVSS Vector Breakdown
Exploitability
AV:NAttack VectorNetwork
AC:LAttack ComplexityLow
PR:NPrivileges RequiredNone
UI:RUser InteractionRequired
Scope
S:UScopeUnchanged
Impact
C:HConfidentialityHigh
I:LIntegrityLow
A:NAvailabilityNone
Weaknesses
Affected Products
vrana
oss-projectaka adminer
Exploitability
No known exploits, KEV entries, or remediation guidance available for this vulnerability yet.
References
https://github.com/vrana/adminer/issues/1298
github.com
https://github.com/vrana/adminer/releases#release-v5.4.3
github.com
https://github.com/vrana/adminer/security/advisories/GHSA-c533-9qwm-8w5h
github.com
and 1 more references View all →
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