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.

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.

EPSS: 0.003 (21.6th percentile) — read the EPSS interpretation.

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.

Affected products

Opencc Jflow — versions 20260129

Weakness classification (CWE)

References

cna@vuldb.com (technical-description, vdb-entry)
cna@vuldb.com (signature, permissions-required)
cna@vuldb.com (third-party-advisory)
cna@vuldb.com (third-party-advisory)
cna@vuldb.com (issue-tracking, exploit)
cna@vuldb.com (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.