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CVE-2026-6009 is a Java deserialization vulnerability in Jaspersoft Reports Library. The flaw affects the jasperreports Maven package and arises from unsafe handling of serialized Java data, allowing attacker-controlled serialized input to be deserialized by the application. Successful exploitation can result in remote code execution in the context of the affected application or host environment.
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1 valid exploit after Mallory filtered fakes, detection scripts, and README-only repos.
This repository is a small standalone Python exploit containing one primary code file (`exploit.py`) and a minimal README naming CVE-2026-6009. The script targets a claimed Java deserialization issue in JasperReport/JasperReports <= 7.0.3 by abusing ysoserial CommonsCollections gadget chains embedded into uploaded `.jasper` files. Its workflow is: (1) ensure `ysoserial` is available by downloading `ysoserial-all.jar` from GitHub into `/tmp/ysoserial.jar`; (2) generate serialized payloads with `java -jar /tmp/ysoserial.jar CommonsCollections<N> <command>`; (3) test exploitability by uploading a `.jasper` payload that runs `ping -c 1 <attacker_ip>` and sniffing locally with `tcpdump` for an ICMP callback from the target host; and (4) if successful, iterate through CommonsCollections versions 1 through 7 again to upload a reverse-shell payload that executes a base64-decoded bash one-liner connecting back to the attacker via `/dev/tcp/<source>/<port>`, while `nc -lnvp <port>` listens for the shell. The exploit is operational rather than framework-based: it includes both detection and exploitation logic, but payload customization is limited to operator-supplied target URL, callback IP, and port. Fingerprintable artifacts include the GitHub ysoserial download URL, local `/tmp` payload paths, the user-specified HTTP upload endpoint, and the attacker callback IP/port. The code assumes a Linux-like target environment because it relies on `ping`, `/bin/bash`, and `/dev/tcp` semantics on the victim side.
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3 sources tracked across advisories and community write-ups. News coverage will land here when it surfaces.
No news coverage yet. Advisories and community discussion only.
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