{"id":"CVE-2026-4959","state":"PUBLISHED","title":"OpenBMB XAgent ShareServer WebSocket Endpoint share.py check_user missing authentication","description":"A vulnerability was found in OpenBMB XAgent 1.0.0. This impacts the function check_user of the file XAgentServer/application/websockets/share.py of the component ShareServer WebSocket Endpoint. Performing a manipulation of the argument interaction_id results in missing authentication. Remote exploitation of the attack is possible. The exploit has been made public and could be used. The vendor was contacted early about this disclosure but did not respond in any way.","publishedAt":"2026-03-27T15:31:29.753Z","updatedAt":"2026-03-31T15:09:19.380Z","severity":{"score":6.9,"label":"Medium","version":"4.0","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P","source":"VulDB"},"assigner":"VulDB","products":["OpenBMB XAgent"],"affected":[{"vendor":"OpenBMB","product":"XAgent","versions":[{"version":"1.0.0","status":"affected"}],"cpes":["cpe:2.3:a:openbmb:xagent:*:*:*:*:*:*:*:*"],"modules":["ShareServer WebSocket Endpoint"]}],"references":["https://vuldb.com/?id.353836","https://vuldb.com/?ctiid.353836","https://vuldb.com/?submit.777622","https://gist.github.com/YLChen-007/531ec6b169f4b9ecbc8c2f0b2cd7c5ee"],"weaknesses":["CWE-306","CWE-287"],"ingestedAt":"2026-10-29T20:12:16.098Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/4xxx/CVE-2026-4959.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-4959","state":"PUBLISHED","datePublished":"2026-03-27T15:31:29.753Z","dateUpdated":"2026-03-31T15:09:19.380Z","assignerShortName":"VulDB","assignerOrgId":"1af790b2-7ee1-4545-860a-a788eba489b5","dateReserved":"2026-03-27T08:07:58.352Z"},"containers":{"cna":{"title":"OpenBMB XAgent ShareServer WebSocket Endpoint share.py check_user missing authentication","descriptions":[{"lang":"en","value":"A vulnerability was found in OpenBMB XAgent 1.0.0. This impacts the function check_user of the file XAgentServer/application/websockets/share.py of the component ShareServer WebSocket Endpoint. Performing a manipulation of the argument interaction_id results in missing authentication. Remote exploitation of the attack is possible. The exploit has been made public and could be used. The vendor was contacted early about this disclosure but did not respond in any way."}],"affected":[{"vendor":"OpenBMB","product":"XAgent","versions":[{"version":"1.0.0","status":"affected"}],"cpes":["cpe:2.3:a:openbmb:xagent:*:*:*:*:*:*:*:*"],"modules":["ShareServer WebSocket Endpoint"]}],"references":[{"url":"https://vuldb.com/?id.353836","name":"VDB-353836 | OpenBMB XAgent ShareServer WebSocket Endpoint share.py check_user missing authentication","tags":["vdb-entry","technical-description"]},{"url":"https://vuldb.com/?ctiid.353836","name":"VDB-353836 | CTI Indicators (IOB, IOC, IOA)","tags":["signature","permissions-required"]},{"url":"https://vuldb.com/?submit.777622","name":"Submit #777622 | OpenBMB XAgent v1.0.0 CWE-306","tags":["third-party-advisory"]},{"url":"https://gist.github.com/YLChen-007/531ec6b169f4b9ecbc8c2f0b2cd7c5ee","tags":["exploit"]}],"metrics":[{"cvssV4_0":{"version":"4.0","baseScore":6.9,"vectorString":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P","baseSeverity":"MEDIUM"}},{"cvssV3_1":{"version":"3.1","baseScore":7.3,"vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L/E:P/RL:X/RC:R","baseSeverity":"HIGH"}},{"cvssV3_0":{"version":"3.0","baseScore":7.3,"vectorString":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L/E:P/RL:X/RC:R","baseSeverity":"HIGH"}},{"cvssV2_0":{"version":"2.0","baseScore":7.5,"vectorString":"AV:N/AC:L/Au:N/C:P/I:P/A:P/E:POC/RL:ND/RC:UR"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-306","type":"CWE","lang":"en","description":"Missing Authentication"}]},{"descriptions":[{"cweId":"CWE-287","type":"CWE","lang":"en","description":"Improper Authentication"}]}],"providerMetadata":{"shortName":"VulDB","orgId":"1af790b2-7ee1-4545-860a-a788eba489b5","dateUpdated":"2026-03-27T15:31:29.753Z"},"timeline":[{"time":"2026-03-27T00:00:00.000Z","lang":"en","value":"Advisory disclosed"},{"time":"2026-03-27T01:00:00.000Z","lang":"en","value":"VulDB entry created"},{"time":"2026-03-27T09:13:15.000Z","lang":"en","value":"VulDB entry last update"}],"credits":[{"lang":"en","value":"Eric-z (VulDB User)","type":"reporter"},{"lang":"en","value":"VulDB","type":"coordinator"}]},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-03-31T15:09:12.809645Z","id":"CVE-2026-4959","options":[{"Exploitation":"poc"},{"Automatable":"yes"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-03-31T15:09:19.380Z"}}]}}}