CVE-2026-63771
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.
- Affected products
- Adminer
- Fix
- Available
- CVSS 3.1
- 7.1 HIGH
- EPSS
- 0.2% (16th percentile)
- Weakness
- CWE-113
- NVD status
- Deferred
- Published
- 2026-07-20
CVE-2026-63771 at NVD
No indexed exploits for CVE-2026-63771 yet
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No exploit for CVE-2026-63771 has been indexed yet. Our index is built from live traffic and upstream syncs, so this page can only say what it knows — not that no exploit exists.