CVE-2026-11860 (GCVE-0-2026-11860)

Vulnerability from cvelistv5 – Published: 2026-06-15 09:57 – Updated: 2026-06-15 10:46
VLAI
Title
Insecure Deserialisation via Plaintext HTTP leading to Remote Code Execution in Quick.CMS
Summary
Quick.CMS deserializes user-controlled data received over plaintext HTTP without ensuring integrity or authenticity. This allows attackers to tamper with serialized payloads in transit and inject malicious objects. Because deserialization is performed without proper validation or class restrictions, crafted payloads can trigger dangerous magic methods (e.g., __wakeup() and __destruct()) and leverage gadget chains, resulting in arbitrary code execution. Exploitation is triggered automatically when an administrator accesses the admin panel. When successfully exploited, this vulnerability allows attackers to execute arbitrary code on the server via manipulated serialized data transmitted over an unprotected channel. This issue was mitigated by limiting the communication to HTTPS in a patch for version 6.8 published on 14.05.2026, deployments without this patch remain vulnerable.
Severity
7.5 (High)
CVSS:4.0/AV:A/AC:L/AT:P/PR:N/UI:P/VC:H/VI:H/VA:H/SC:L/SI:L/SA:L
SSVC
Exploitation: none Automatable: no Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-06-15 10:46 UTC
CWE
  • CWE-502 - Deserialization of Untrusted Data
  • CWE-94 - Improper Control of Generation of Code ('Code Injection')
Assigner
CERT-PL CNA under the ENISA root
CNA scorecard B 81/100 over 257 records in the last 180 days details
References
Impacted products
Vendor Product Version CPE status
OpenSolution Quick.CMS Affected: 0 , ≤ 6.8 (semver)
guessed Create a notification for this product.
Credits
Arkadiusz Marta
Show details on NVD website
To clipboard 

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