CVE-2026-16076: Authentication Bypass by Spoofing in AstrBotDevs AstrBot
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.
AI Analysis
Technical Summary
This vulnerability in AstrBotDevs AstrBot up to version 4.25.5 allows remote attackers to bypass authentication by spoofing the Username argument in the OpenApiRoute.chat_send function of the API component (astrbot/dashboard/routes/open_api.py). The flaw enables unauthorized access without proper credentials. The vendor was notified but has not issued any patch or mitigation guidance. The vulnerability is publicly known, but no known exploits are currently reported in the wild.
Potential Impact
Successful exploitation results in authentication bypass, potentially allowing unauthorized users to access functionality or data restricted to authenticated users. This could lead to unauthorized actions within the affected API component. The medium CVSS score reflects a moderate impact with low attack complexity and no user interaction required.
Mitigation Recommendations
No official fix or patch is currently available, and the vendor has not responded to the disclosure. Users should monitor vendor communications for updates. Until a patch is released, consider restricting access to the affected API endpoint through network controls or other compensating controls to limit exposure.
CVE-2026-16076: Authentication Bypass by Spoofing in AstrBotDevs AstrBot
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.
CVSS v4.0
Score 5.3medium
Affected software
pkg:github/astrbotdevs/AstrBotcpe:2.3:a:astrbot:astrbot:*:*:*:*:*:*:*:*Run on your own infrastructure? Check whether these packages are installed with threat-finder — our free open-source scanner.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability in AstrBotDevs AstrBot up to version 4.25.5 allows remote attackers to bypass authentication by spoofing the Username argument in the OpenApiRoute.chat_send function of the API component (astrbot/dashboard/routes/open_api.py). The flaw enables unauthorized access without proper credentials. The vendor was notified but has not issued any patch or mitigation guidance. The vulnerability is publicly known, but no known exploits are currently reported in the wild.
Potential Impact
Successful exploitation results in authentication bypass, potentially allowing unauthorized users to access functionality or data restricted to authenticated users. This could lead to unauthorized actions within the affected API component. The medium CVSS score reflects a moderate impact with low attack complexity and no user interaction required.
Mitigation Recommendations
No official fix or patch is currently available, and the vendor has not responded to the disclosure. Users should monitor vendor communications for updates. Until a patch is released, consider restricting access to the affected API endpoint through network controls or other compensating controls to limit exposure.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- VulDB
- Date Reserved
- 2026-07-17T13:39:29.721Z
- Cvss Version
- 4.0
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 6a5b400c34329bf928c6fba8
Added to database: 07/18/2026, 08:57:48 UTC
Last enriched: 07/18/2026, 09:35:51 UTC
Last updated: 07/18/2026, 11:08:17 UTC
Views: 2
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