CVE-2026-16076
AstrBotDevs AstrBot API open_api.py OpenApiRoute.chat_send authentication spoofing
- State
- Published
- Severity
- 5.3 Medium
- Published
- Jul 18, 2026
- Updated
- Jul 20, 2026
- Reserved
- Jul 17, 2026
Description
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.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 4.0 | 5.3 Medium | 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 | VulDB |
| 3.1 | 6.3 Medium | 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 | VulDB |
| 3.0 | 6.3 Medium | 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 | VulDB |
| 2.0 | 6.5 Medium | AV:N/AC:L/Au:S/C:P/I:P/A:P/E:POC/RL:ND/RC:UR | VulDB |
Weaknesses
Affected Products
| Product | Versions |
|---|---|
AstrBotAstrBotDevs |
|
References
- VDB-379791 | AstrBotDevs AstrBot API open_api.py OpenApiRoute.chat_send authentication spoofingvdb-entrytechnical-description
- VDB-379791 | CTI Indicators (IOB, IOC, IOA)signaturepermissions-required
- CVE-2026-16076 | CVE Analysis and Reportthird-party-advisory
- Submit #852864 | AstrBotDevs AstrBot <= 4.25.5 Authentication Bypass by Spoofing (CWE-290)third-party-advisory
- https://gist.github.com/YLChen-007/080ba55a71588dbbba3f27afed4c072cexploit
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