CVE-2026-16076 (GCVE-0-2026-16076)

Vulnerability from cvelistv5 – Published: 2026-07-18 05:30 – Updated: 2026-07-20 19:10
VLAI
Title
AstrBotDevs AstrBot API open_api.py OpenApiRoute.chat_send authentication spoofing
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 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.
Severity
5.3 (Medium)
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
6.3 (Medium)
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
6.3 (Medium)
CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L/E:P/RL:X/RC:R
SSVC
Exploitation: poc Automatable: no Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
  • CWE-290 - Authentication Bypass by Spoofing
  • CWE-287 - Improper Authentication
Assigner
References
URL Tags
https://vuldb.com/vuln/379791 vdb-entrytechnical-description
https://vuldb.com/vuln/379791/cti signaturepermissions-required
https://vuldb.com/cve/CVE-2026-16076 third-party-advisory
https://vuldb.com/submit/852864 third-party-advisory
https://gist.github.com/YLChen-007/080ba55a71588d… exploit
Impacted products
Vendor Product Version
AstrBotDevs AstrBot Affected: 4.25.0
Affected: 4.25.1
Affected: 4.25.2
Affected: 4.25.3
Affected: 4.25.4
Affected: 4.25.5
    cpe:2.3:a:astrbot:astrbot:*:*:*:*:*:*:*:*
 Create a notification for this product.
Credits
Eric-d (VulDB User) VulDB CNA Team
Show details on NVD website
To clipboard 

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Taxonomy of the tags.





Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


Detection rules are retrieved from Rulezet.