CVE-2026-56706 (GCVE-0-2026-56706)

Vulnerability from cvelistv5 – Published: 2026-08-25 01:30 – Updated: 2026-08-25 15:34
VLAI
Title
Adminer before 5.4.3 CSRF Token Secret Recovery via XOR Masking
Summary
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.
Severity
6.1 (Medium)
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
6.8 (Medium)
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:H/A:H
SSVC
Exploitation: poc Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-25 15:34 UTC
CWE
  • CWE-330 - Use of Insufficiently Random Values
Assigner
VulnCheck CNA under the mitre root
CNA scorecard B 84/100 over 6045 records in the last 180 days details
References
Impacted products
Vendor Product Version CPE status
vrana adminer Affected: 0 , < 5.4.3 (semver)
Unaffected: 5.4.3 (semver)
    cpe:2.3:a:adminer:adminer:*:*:*:*:*:*:*:*
Create a notification for this product.
Date Public
2026-07-09 00:00
Credits
az0mb13
Show details on NVD website
To clipboard 

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