What is CVE-2023-26234?

CVE-2023-26234 is a medium-severity vulnerability in Jd-Gui Project, classified under Deserialization of Untrusted Data. CVSS score: 6.6/10. Published 2023-02-21.

How severe is CVE-2023-26234?

Medium severity. CVSS v3 base score is 6.6 out of 10.

Deserialization in Jd-Gui Project

CVE-2023-26234

JD-GUI 1.6.6 allows deserialization via UIMainWindowPreferencesProvider.singleInstance.

Vulnerability class: Insecure Deserialization

Published 2023-02-21 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 6.6 (Medium). Vector: CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.008 (56.3th percentile), scored 2026-10-02.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 56th percentile — 56.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.008 · newest: 0.008 · change: 0.000

Affected products

Jd-Gui Project — versions 1.6.6

Weakness classification (CWE)

CWE-502 — Deserialization of Untrusted Data

References

github.com/java-decompiler/jd-gui/issues/415 (Exploit, Issue Tracking)
github.com/java-decompiler/jd-gui/pull/417 (Exploit, Issue Tracking)

Frequently asked questions

What is CVE-2023-26234?: CVE-2023-26234 is a medium-severity vulnerability in Jd-Gui Project, classified under Deserialization of Untrusted Data. CVSS score: 6.6/10. Published 2023-02-21.
How severe is CVE-2023-26234?: Medium severity. CVSS v3 base score is 6.6 out of 10.