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Critical CVSS 9.2

CVE-2026-13014

NVD analysis in progress

A vulnerability in Thales CERT "Suspicious" application =< 1.3.4 allows a remote and unauthenticated attacker to execute arbitrary code and arbitrarily overwrite writable application files—including Python modules, configuration files, cron inputs, and runtime artifacts—leading to a persistent denial of service, the potential compromise of application secrets or integrations, and root-level execution inside the Django application container. This vulnerability has been names "Matryoshka Mail". Thales PSIRT acknowledges and thanks Lucien Doustaly (aka wlayzz) for discovering and reporting this issue.

What this means

Exposure
Exploitable remotely over the network, without authentication and with no action from the victim. It also depends on circumstances the attacker does not control.
Impact
An attacker can read sensitive data, modify or destroy data and take the service offline.
Weakness
An attacker-supplied file path is not confined, letting them read or write outside the intended folder.
Likelihood
Its EPSS score stays low: nothing points to imminent exploitation, which is no reason to leave it unpatched.

What to doPatch without waiting for the next scheduled cycle. Start with the instances exposed to the internet.

Read automatically from the CVSS vector, the weakness type (CWE) and the EPSS score. The technical description above remains the one published by NIST.

Published
13 July 2026
CVSS
9.2 (v4.0) CVSS:4.0/AV:N/AC:L/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
EPSS
0.47% probability of exploitation within 30 days · above 38% of all CVEs
Weakness
CWE-22CWE-73CWE-94
Sources
nvd
References

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