JeecgBoot EUVD-2026-26738

Upgrade JeecgBoot to a patched version released after 3.9.1 when the vendor publishes it; the exact fix version is not yet publicly available but the vendor has committed to releasing a patch. Until a patched release is available, implement immediate compensating controls: restrict access to the LoadFile endpoint to trusted internal networks using firewall rules or application-level access controls; disable the LoadFile endpoint if it is not actively used; implement strict input validation on the files parameter to reject absolute paths, URLs with schemes (http://, https://, file://), and path traversal sequences before the existing checkPathTraversalBatch function is invoked; enable network egress filtering to prevent the server from making outbound requests to unexpected destinations (allowlist only required upstream services); monitor LoadFile endpoint access logs for suspicious file parameter patterns or requests to internal IP ranges. Each control has trade-offs: network egress filtering may break legitimate functionality if the application intentionally makes outbound requests; input validation could be bypassed if encoding or normalization is insufficient. Monitor the GitHub issue thread (https://github.com/jeecgboot/JeecgBoot/issues/9553) and official vendor advisories for patch release announcements.