CVE-2026-103831
HighCVSS 7.5Summary
A vulnerability in the Psr16CacheAdapter component of the TrueLayer Magento 2 Plugin involves insecure deserialization due to the use of PHP's native unserialize() function without restrictions on allowed classes. An attacker who can write to the cache backend (e.g., Redis, Memcached) can inject crafted PHP objects and execute arbitrary code.
Risk Assessment
If an attacker can write to the cache, they can achieve remote code execution in the Magento environment, leading to full compromise of the store and data.
Recommendation
Update the TrueLayer Magento 2 Plugin to the latest version if a patch is available. Restrict access to the cache infrastructure and use secure deserialization methods.
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Original NVD description (English source)
CVE-2026-103831: Insecure deserialization vulnerability in the Psr16CacheAdapter component of the TrueLayer Magento 2 Plugin, due to the use of PHP's native unserialize() function without restrictions on the classes allowed when retrieving data stored in the cache. An attacker who already has the ability to write manipulated data to the cache backend used by Magento—such as Redis or Memcached—could inject specially crafted PHP objects and trigger their deserialization, potentially leading to arbitrary code execution via gadget strings available in the application environment. Exploitation therefore requires a prerequisite condition that allows writing to the cache infrastructure, either through access to the local file system or to a cache infrastructure accessible from the Magento environment.
Vulnerability data from NVD (NIST) · CISA KEV · EPSS