XXE in Opencc Jflow
CVE-2026-2536
A vulnerability was determined in opencc JFlow up to 20260129. This affects the function Imp_Done of the file src/main/java/bp/wf/httphandler/WF_Admin_AttrFlow.java of the component Workflow Engine. This manipulation of the argument File causes xml external entity reference. The attack may be initiated remotely. The exploit has been publicly disclosed and may be utilized. The project was informed of the problem early through an issue report but has not responded yet.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 6.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L.
EPSS exploit prediction
EPSS: 0.003 (20.9th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 21st percentile — 20.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.003 · newest: 0.003 · change: +0.000
Affected products
- Opencc Jflow — versions 20260129
Weakness classification (CWE)
References
- vuldb.com/ (technical-description, vdb-entry)
- vuldb.com/ (signature, permissions-required)
- vuldb.com/ (third-party-advisory)
- vuldb.com/ (third-party-advisory)
- gitee.com/opencc/JFlow/issues/IDN7GT (issue-tracking, exploit)
- gitee.com/opencc/JFlow/ (product)
Frequently asked questions
- What is CVE-2026-2536?
- CVE-2026-2536 is a medium-severity vulnerability in Opencc Jflow, classified under Externally Controlled Reference to a Resource in Another Sphere. CVSS score: 6.3/10. Published 2026-02-16.
- How severe is CVE-2026-2536?
- Medium severity. CVSS v3 base score is 6.3 out of 10.