CVE-2026-16076

MEDIUM 6.3

AstrBotDevs AstrBot API open_api.py OpenApiRoute.chat_send authentication spoofing

CVSS Score

6.3

EPSS Score

0.0%

EPSS Percentile

0th

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.

CWE	CWE-290 CWE-287
Vendor	astrbotdevs
Product	astrbot
Published	Jul 18, 2026

Stay Ahead of the Next One

Get instant alerts for astrbotdevs astrbot

Be the first to know when new medium vulnerabilities affecting astrbotdevs astrbot are published — delivered to Slack, Telegram or Discord.

Get Free Alerts → Free · No credit card · 60 sec setup

CVSS v3 Breakdown

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

Attack Vector

Attack Complexity

Privileges Required

User Interaction

Scope

Confidentiality

Integrity

Availability

Affected Versions

AstrBotDevs / AstrBot

4.25.0 4.25.1 4.25.2 4.25.3 4.25.4 4.25.5

References

NVD ↗ CVE.org ↗ EPSS Data ↗

vuldb.com: https://vuldb.com/vuln/379791 vuldb.com: https://vuldb.com/vuln/379791/cti vuldb.com: https://vuldb.com/cve/CVE-2026-16076 vuldb.com: https://vuldb.com/submit/852864 gist.github.com: https://gist.github.com/YLChen-007/080ba55a71588dbbba3f27afed4c072c

Credits

🔍 Eric-d (VulDB User) VulDB CNA Team