---
id: CVE-2026-16076
title: A vulnerability has been found in AstrBotDevs AstrBot up to 4.25.5
summary: >-
  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 …
severity: medium
cvss: 6.3
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L'
cwe:
  - CWE-287
  - CWE-290
published: '2026-07-18'
updated: '2026-07-18'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-16076'
references:
  - url: 'https://gist.github.com/YLChen-007/080ba55a71588dbbba3f27afed4c072c'
    label: cna@vuldb.com
  - url: 'https://vuldb.com/cve/CVE-2026-16076'
    label: cna@vuldb.com
  - url: 'https://vuldb.com/submit/852864'
    label: cna@vuldb.com
  - url: 'https://vuldb.com/vuln/379791'
    label: cna@vuldb.com
  - url: 'https://vuldb.com/vuln/379791/cti'
    label: cna@vuldb.com
tags:
  - nvd
epss: 0.00506
epssPercentile: 0.4064
ingestedAt: '2026-07-18T22:25:39.643Z'
---

## Overview

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.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.