# CVE-2026-56706

## Summary

- **CVE ID:** CVE-2026-56706
- **Severity:** MEDIUM
- **CVSS Score:** 6.8 (CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:P/VC:N/VI:H/VA:H/SC:N/SI:N/SA:N)
- **CWE:** CWE-330
- **Published:** Aug 25, 2026
- **Last Modified:** Aug 25, 2026

## Description

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.

## Affected Products

- vrana — adminer (0)
- vrana — adminer (5.4.3)

## References

- [CNA](https://github.com/vrana/adminer/security/advisories/GHSA-33j4-hc95-pggg)
- [CNA](https://www.vulncheck.com/advisories/adminer-before-csrf-token-secret-recovery-via-xor-masking)

## Exploitation Prediction (EPSS)

- **EPSS Score:** 0.29%
- **EPSS Percentile:** 21.8

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_Exported from OnDuty AI Vulnerability Intelligence on 2026-09-12._