CVE-2026-2536 opencc JFlow Workflow WF_Admin_AttrFlow.java Imp_Done xml external entity reference
Remote attackers can exploit an XML External Entity vulnerability in the JFlow workflow engine to read sensitive files or cause denial of service.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-2536?
CVE-2026-2536 is a medium-severity vulnerability in opencc JFlow, published on 16 Feb 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
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.
Which versions are affected by CVE-2026-2536?
How do I fix CVE-2026-2536?
No fix has been published for CVE-2026-2536 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-2536 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-2536 exists.
Sources
Also known as GHSA-gw5f-7fqh-pvm6.