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Vulnerability · Published Jul 18, 2026 · Assigned by VulDB

CVE-2026-16076AstrBotDevs AstrBot API open_api.py OpenApiRoute.chat_send authentication spoofing

Medium 6.3

In plain English

A medium-severity authentication bypass by spoofing in AstrBot from AstrBotDevs. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.5% (higher than 43% of all known vulnerabilities).

Severity (CVSS 3.1)6.3Medium
Exploit odds (30 days)0.5%top 56.6% of all CVEs
Exploited in the wildNo reportsCISA SSVC: poc
Attack toolingNoneno public tooling known

Official 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.

Affected products (as reported)

VendorProductVersions
AstrBotDevs AstrBot 4.25.04.25.14.25.24.25.34.25.44.25.5

Weakness: CWE-290, CWE-287 · Vector: 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

References