CVEvulnerability
CVE-2026-63771
6.0 MEDIUM
Official page ↗
- Status
- Deferred
- Published
- 2026-07-20
- Last modified
- 2026-10-24
- Assigner
- [email protected]
- CVSS 4.0 ([email protected])
- 6.0 MEDIUM — CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:P/VC:H/VI:L/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
- CVSS 3.1 ([email protected])
- 7.1 HIGH — CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:L/A:N
- Weaknesses
- CWE-113
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.
Related
Weakness · CWE (1)
- CWE-113 Improper Neutralization of CRLF Sequences in HTTP Headers weakness
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
- https://www.vulncheck.com/advisories/adminer-cookie-injection-via-x-forwarded-prefix-header www.vulncheck.com