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Vulnerability in jansi library
16 June 2026 | CERT Polska | #vulnerability, #warning, #cve
CVE ID CVE-2026-8484
Publication date 16 June 2026
Vendor FuseSource
Product jansi
Vulnerable versions All through 2.4.3
Vulnerability type (CWE) Heap-based Buffer Overflow (CWE-122)
Report source Report to CERT Polska

Description

CERT Polska has received a report about vulnerability in FuseSource jansi library and participated in coordination of its disclosure.

The vulnerability CVE-2026-8484: A heap buffer overflow vulnerability exists in the jansi JNI (Java Native Interface) ioctl() wrapper due to a lack of size verification for the argument array before the system call. This can lead to heap corruption and application crashes (DoS).

All versions are believed to be vulnerable. This project is unmaintained at the time of CVE assignment.

Credits

We thank Michał Majchrowicz and Marcin Wyczechowski (AFINE Team) for the responsible vulnerability report.

More about the coordinated vulnerability disclosure process at CERT Polska can be found at https://cert.pl/en/cvd/.