{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-16076", "assignerOrgId": "1af790b2-7ee1-4545-860a-a788eba489b5", "state": "PUBLISHED", "assignerShortName": "VulDB", "dateReserved": "2026-07-17T13:39:29.721Z", "datePublished": "2026-07-18T05:30:08.451Z", "dateUpdated": "2026-07-18T05:30:08.451Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "1af790b2-7ee1-4545-860a-a788eba489b5", "shortName": "VulDB", "dateUpdated": "2026-07-18T05:30:08.451Z"}, "title": "AstrBotDevs AstrBot API open_api.py OpenApiRoute.chat_send authentication spoofing", "problemTypes": [{"descriptions": [{"type": "CWE", "cweId": "CWE-290", "lang": "en", "description": "Authentication Bypass by Spoofing"}]}, {"descriptions": [{"type": "CWE", "cweId": "CWE-287", "lang": "en", "description": "Improper Authentication"}]}], "affected": [{"vendor": "AstrBotDevs", "product": "AstrBot", "versions": [{"version": "4.25.0", "status": "affected"}, {"version": "4.25.1", "status": "affected"}, {"version": "4.25.2", "status": "affected"}, {"version": "4.25.3", "status": "affected"}, {"version": "4.25.4", "status": "affected"}, {"version": "4.25.5", "status": "affected"}], "cpes": ["cpe:2.3:a:astrbot:astrbot:*:*:*:*:*:*:*:*"], "modules": ["API"]}], "descriptions": [{"lang": "en", "value": "A vulnerability has been found in AstrBotDevs AstrBot up to 4.25.5. This issue affects the function OpenApiRoute.chat_send of the file astrbot/dashboard/routes/open_api.py of the component API. Such manipulation of the argument Username leads to authentication bypass by spoofing. It is possible to launch the attack remotely. The exploit has been disclosed to the public and may be used. The vendor was contacted early about this disclosure but did not respond in any way."}], "metrics": [{"cvssV4_0": {"version": "4.0", "baseScore": 5.3, "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P", "baseSeverity": "MEDIUM"}}, {"cvssV3_1": {"version": "3.1", "baseScore": 6.3, "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L/E:P/RL:X/RC:R", "baseSeverity": "MEDIUM"}}, {"cvssV3_0": {"version": "3.0", "baseScore": 6.3, "vectorString": "CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L/E:P/RL:X/RC:R", "baseSeverity": "MEDIUM"}}, {"cvssV2_0": {"version": "2.0", "baseScore": 6.5, "vectorString": "AV:N/AC:L/Au:S/C:P/I:P/A:P/E:POC/RL:ND/RC:UR"}}], "timeline": [{"time": "2026-07-17T00:00:00.000Z", "lang": "en", "value": "Advisory disclosed"}, {"time": "2026-07-17T02:00:00.000Z", "lang": "en", "value": "VulDB entry created"}, {"time": "2026-07-17T15:45:44.000Z", "lang": "en", "value": "VulDB entry last update"}], "credits": [{"lang": "en", "value": "Eric-d (VulDB User)", "type": "reporter"}, {"lang": "en", "value": "VulDB CNA Team", "type": "coordinator"}], "references": [{"url": "https://vuldb.com/vuln/379791", "name": "VDB-379791 | AstrBotDevs AstrBot API open_api.py OpenApiRoute.chat_send authentication spoofing", "tags": ["vdb-entry", "technical-description"]}, {"url": "https://vuldb.com/vuln/379791/cti", "name": "VDB-379791 | CTI Indicators (IOB, IOC, IOA)", "tags": ["signature", "permissions-required"]}, {"url": "https://vuldb.com/cve/CVE-2026-16076", "name": "CVE-2026-16076 | CVE Analysis and Report", "tags": ["third-party-advisory"]}, {"url": "https://vuldb.com/submit/852864", "name": "Submit #852864 | AstrBotDevs AstrBot <= 4.25.5 Authentication Bypass by Spoofing (CWE-290)", "tags": ["third-party-advisory"]}, {"url": "https://gist.github.com/YLChen-007/080ba55a71588dbbba3f27afed4c072c", "tags": ["exploit"]}]}}}

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