CVE-2026-56706

Adminer before 5.4.3 uses a CSRF token scheme that transmits both the XOR mask and the masked value in every token (format (rand XOR secret):rand), allowing anyone who observes a single CSRF token (e.g., via network sniffing, log files, Referrer header, or XSS) to recover the session secret with a single XOR operation and forge unlimited valid tokens. The implementation is further weakened by a low-entropy session token (rand(1,1e6), ~20 bits) that permits blind brute-force, and by use of loose comparison (==) in token verification, enabling PHP type juggling. Exploitation enables cross-site request forgery against authenticated sessions, including execution of arbitrary SQL queries.

CVSS v3 6.8 MEDIUM

6.8^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 1.6 / Impact : 5.2

Attack Vector NETWORK

Attack Complexity HIGH

Privileges Required NONE

User Interaction REQUIRED

Confidentiality Impact NONE

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://github.com/vrana/adminer/security/advisories/GHSA-33j4-hc95-pggg
https://www.vulncheck.com/advisories/adminer-before-csrf-token-secret-recovery-via-xor-masking
https://github.com/vrana/adminer/security/advisories/GHSA-33j4-hc95-pggg

Configurations

No configuration.

History

No history.

Information

Published : 2026-08-25 02:16

Updated : 2026-09-08 20:23

NVD link : CVE-2026-56706

Mitre link : CVE-2026-56706

CVE.ORG link : CVE-2026-56706

JSON object : View

Products Affected

No product.

CWE

CWE-330

Use of Insufficiently Random Values

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