EUVD-2026-93363
GHSA-x69j-rqv7-gx25
Severity by source
CVSS:4.0/AV:L/AC:H/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Local/config-dependent vector (AV:L) with a mandatory cache-write precondition and gadget-chain dependency modeled as AC:H; no app authentication needed (PR:N); successful RCE yields full C/I/A impact.
Primary rating from Vendor (INCIBE).
CVSS VectorVendor: INCIBE
Lifecycle Timeline
3DescriptionCVE.org
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.
Articles & Coverage 1
AnalysisAI
Insecure deserialization in the TrueLayer Magento 2 Plugin's Psr16CacheAdapter component allows an attacker who already has write access to the Magento cache backend (Redis or Memcached) to achieve arbitrary code execution via crafted PHP objects. The flaw arises from PHP's unserialize() being called without class restrictions, and exploitation requires both cache-write capability-obtainable through local filesystem access or an exposed cache service-and the presence of a usable gadget chain in the deployed Magento/Adobe Commerce environment. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Requires the attacker to already have write access to the cache backend (Redis or Memcached) used by the Magento installation - achievable via local filesystem access or network reachability to an exposed/misconfigured cache service - plus the presence of an exploitable PHP gadget chain in the deployed Magento/Adobe Commerce environment to convert deserialization into code execution. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | This is a high-CVSS flaw (7.5, CVSS 4.0) whose real-world risk is materially lower than the number suggests once prerequisites are considered. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | Full exploit scenario with step-by-step reproduction available after sign-in. |
| Remediation | No vendor-released patch has been identified at time of analysis. … Detailed patch versions, workarounds, and compensating controls in full report. |
Recommended ActionAI
Within 24 hours, inventory all Magento/Adobe Commerce deployments for the TrueLayer Magento 2 Plugin and verify whether Redis or Memcached is exposed beyond trusted application hosts; if exposed, immediately restrict access via firewall or security groups, enable authentication and TLS where supported, and monitor for unusual cache writes. …
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External POC / Exploit Code
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