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CVE-2026-40901 is a deserialization vulnerability in DataEase affecting versions 2.10.20 and earlier. The application bundles velocity-1.7.jar, which in turn includes commons-collections-3.2.1.jar and its known InvokerTransformer-based gadget chains, and also bundles Quartz 2.3.2. Quartz deserializes job data BLOBs from the qrtz_job_details table using ObjectInputStream without a deserialization filter or class allowlist. An authenticated attacker who can modify records in the Quartz job table—explicitly noted as possible via the separate previewSql SQL injection—can replace a scheduled job's JOB_DATA with a malicious CommonsCollections6 gadget-chain payload. When the corresponding Quartz cron trigger executes, the payload is deserialized and arbitrary commands are executed as root inside the container, resulting in remote code execution.
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1 valid exploit after Mallory filtered fakes, detection scripts, and README-only repos.
Repository is a self-contained PoC and Docker lab for a four-stage exploit chain against DataEase <= v2.10.20, culminating in root RCE via Quartz deserialization. Structure is small and focused: docker-compose.yml plus conf/ and mysql/ stand up a vulnerable DataEase + MySQL environment; exploit/de_common.py provides reusable HTTP/API helpers for /dekey key recovery, RSA-encrypted login, JWT forgery, datasource creation, and previewSql invocation; exploit/de_rce_chain.py is the main end-to-end exploit that authenticates, registers a malicious datasource with illegalParameters=[] and allowMultiQueries=true, generates a CommonsCollections6 gadget using ysoserial in a Java 8 Docker container, and injects stacked SQL queries to overwrite Quartz JOB_DATA and trigger deserialization; exploit/file_read.py demonstrates the arbitrary file-read stage by coercing DataEase to connect to a rogue MySQL server; exploit/rogue_mysql.py implements that minimal rogue MySQL server and captures uploaded file contents via LOCAL INFILE. The exploit is operational rather than framework-based: it contains working payload generation and execution logic, supports arbitrary commands and reverse shells, and includes all infrastructure needed for local reproduction.
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