CVE-2026-16076CWE-287CWE-290

AstrBotDevs AstrBot API open_api.py OpenApiRoute.chat_send authentication spoofing

Medium · published July 18, 2026

CVSS v4.0
5.3
EPSS
1%
Percentile
42.3
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v4.0
5.3 · MEDIUM
Vector
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
EPSS
0.00506 · 42.3th percentile
Weaknesses
CWE-287 · Improper Authentication; CWE-290 · Authentication Bypass by Spoofing
Published
2026-07-18T05:30Z
EPSS history
Timeline
  • 18 JUL 05:30Z
    AstrBotDevs AstrBot API open_api.py OpenApiRoute.chat_send authentication spoofing
    cvelistv5