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    CVE-2026-16076

    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.

    Published:Jul 18, 2026
    Last Modified:Jul 20, 2026
    EPS:Jul 18, 2026
    EPSS Score:0.00291
    CVSS Score:6.3

    Affected Products

    Vendor
    Astrbot
    Product
    Astrbot

    Exploits

    No exploit reference

    Common Attack Pattern Enumeration and Classification (CAPEC)

    CAPEC-114 Authentication Abuse
    CAPEC-115 Authentication Bypass
    CAPEC-151 Identity Spoofing
    CAPEC-194 Fake the Source of Data
    CAPEC-21 Exploitation of Trusted Identifiers
    CAPEC-22 Exploiting Trust in Client
    CAPEC-459 Creating a Rogue Certification Authority Certificate
    CAPEC-461 Web Services API Signature Forgery Leveraging Hash Function Extension Weakness
    CAPEC-473 Signature Spoof
    CAPEC-476 Signature Spoofing by Misrepresentation
    CAPEC-57 Utilizing REST's Trust in the System Resource to Obtain Sensitive Data
    CAPEC-59 Session Credential Falsification through Prediction
    CAPEC-593 Session Hijacking
    CAPEC-60 Reusing Session IDs (aka Session Replay)
    CAPEC-633 Token Impersonation
    CAPEC-650 Upload a Web Shell to a Web Server
    CAPEC-667 Bluetooth Impersonation AttackS (BIAS)
    CAPEC-94 Adversary in the Middle (AiTM)

    Related CVEs

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    CVE-2026-16077 (CVSS 1.9) — A vulnerability was found in AstrBotDevs AstrBot up to 4.25.5. Impacted is the function _normalize_rw_path of …
    CVE-2026-16075 (CVSS 2.1) — A flaw has been found in AstrBotDevs AstrBot up to 4.25.5. This vulnerability affects the function OpenApiRout…
    CVE-2026-16074 (CVSS 2.1) — A vulnerability was detected in AstrBotDevs AstrBot up to 4.25.2. This affects the function update_plugin/upda…
    CVE-2026-16073 (CVSS 2) — A security vulnerability has been detected in AstrBotDevs AstrBot up to 4.25.2. Affected by this issue is the …
    CVE-2026-15501 (CVSS 2.1) — A security vulnerability has been detected in AstrBotDevs AstrBot up to 4.25.2. Affected by this issue is the …
    CVE-2026-15500 (CVSS 2.1) — A weakness has been identified in AstrBotDevs AstrBot up to 4.25.2. Affected by this vulnerability is the func…
    CVE-2026-15499 (CVSS 2.1) — A security flaw has been discovered in AstrBotDevs AstrBot up to 4.25.2. Affected is the function FutureTaskTo…
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    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High