{"schema":"threatline.record/2","record":{"id":"CVE-2026-108637","aliases":[],"summary":"JeecgBoot through 3.9.5 Missing Authorization via deleteUserGroupBatch Endpoint","details":"JeecgBoot through 3.9.5 contains a missing authorization vulnerability that allows low-privileged authenticated users to remove user group members by calling DELETE /sys/user/deleteUserGroupBatch. Attackers can supply any groupId and comma-separated userIds to delete sys_ugroup_user rows without permission or tenant checks, tampering with administrator-maintained groups.","categories":["Unclassified"],"product":"JeecgBoot","vendor":"jeecgboot","ecosystem":null,"affected_ranges":[{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-108637","source_modified_at":"2026-10-18T12:03:17.202Z","fetched_at":"2026-10-23T18:45:31.882637Z","product":"JeecgBoot","vendor":"jeecgboot","versions":[{"version":"0","lessThanOrEqual":"3.9.5","status":"affected","versionType":"custom"}],"defaultStatus":"unaffected"}],"fixed_versions":[],"cvss":5.3,"severity":"Medium","kev":{"listed":false},"epss":{"probability":0.00238,"percentile":0.1407,"score_date":"2026-10-23"},"published_at":"2026-10-10T21:49:29.917Z","modified_at":"2026-10-18T12:03:17.202Z","provenance":[{"source":"CVE List","url":"https://www.cve.org/CVERecord?id=CVE-2026-108637","fetched_at":"2026-10-23T18:45:31.882637Z","source_modified_at":"2026-10-18T12:03:17.202Z"},{"source":"EPSS","url":"https://api.first.org/data/v1/epss?cve=CVE-2026-108637","fetched_at":"2026-10-23T18:42:43.628194Z","source_modified_at":"2026-10-23"}],"sources":["CVE List","EPSS"],"references":[{"source":"CVE List","url":"https://github.com/AnkesKasty/cve-request-poc/blob/a7b6d1423555812d8efa26c91c5d0683164b31e5/JeecgBoot/poc_user_group_member_removal_batch.py","tags":["exploit"]},{"source":"CVE List","url":"https://github.com/jeecgboot/JeecgBoot/blob/e3b9dc0aefe1943d9772b026f64ed671a7c82802/jeecg-boot/jeecg-module-system/jeecg-system-biz/src/main/java/org/jeecg/modules/system/controller/SysUserController.java#L851-L866","tags":["technical-description"]},{"source":"CVE List","url":"https://www.vulncheck.com/advisories/jeecgboot-through-3.9.5-missing-authorization-via-deleteusergroupbatch-endpoint","tags":["third-party-advisory"]}],"locations":[],"motoko_assessment":{"status":"requires_architecture_review","automatic_remediation":false},"cve_state":"PUBLISHED","cvss_source":"CVE List","ssvc":{"exploitation":"poc","automatable":"no","technical_impact":"partial","assessed_at":"2026-10-18T11:42:59.622821Z"},"classification":{"method":"product-first software-layer rules","rules_version":"2.1","matched_on":null,"confidence":"unknown","reviewed":false},"change_timestamp":"2026-10-18T12:03:17.202Z","content_hash":"c22d9bacfbe687da986bccdddce6b9bc251b3c47fcda20f36b8b5dad04b0cd6b"}}