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Vulnerability Details :

CVE-2026-16076

Summary
Assigner-VulDB
Assigner Org ID-1af790b2-7ee1-4545-860a-a788eba489b5
Published At-18 Jul, 2026 | 05:30
Updated At-18 Jul, 2026 | 05:30
Rejected At-
Credits

AstrBotDevs AstrBot API open_api.py OpenApiRoute.chat_send authentication spoofing

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.

Vendors
-
Not available
Products
-
Metrics (CVSS)
VersionBase scoreBase severityVector
Weaknesses
Attack Patterns
Solution/Workaround
References
HyperlinkResource Type
EPSS History
Score
Latest Score
-
N/A
No data available for selected date range
Percentile
Latest Percentile
-
N/A
No data available for selected date range
Stakeholder-Specific Vulnerability Categorization (SSVC)
â–¼Common Vulnerabilities and Exposures (CVE)
cve.org
Assigner:VulDB
Assigner Org ID:1af790b2-7ee1-4545-860a-a788eba489b5
Published At:18 Jul, 2026 | 05:30
Updated At:18 Jul, 2026 | 05:30
Rejected At:
â–¼CVE Numbering Authority (CNA)
AstrBotDevs AstrBot API open_api.py OpenApiRoute.chat_send authentication spoofing

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
Vendor
AstrBotDevs
Product
AstrBot
CPEs
  • cpe:2.3:a:astrbot:astrbot:*:*:*:*:*:*:*:*
Modules
  • API
Versions
Affected
  • 4.25.0
  • 4.25.1
  • 4.25.2
  • 4.25.3
  • 4.25.4
  • 4.25.5
Problem Types
TypeCWE IDDescription
CWECWE-290Authentication Bypass by Spoofing
CWECWE-287Improper Authentication
Type: CWE
CWE ID: CWE-290
Description: Authentication Bypass by Spoofing
Type: CWE
CWE ID: CWE-287
Description: Improper Authentication
Metrics
VersionBase scoreBase severityVector
4.05.3MEDIUM
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
3.16.3MEDIUM
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
3.06.3MEDIUM
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
2.06.5N/A
AV:N/AC:L/Au:S/C:P/I:P/A:P/E:POC/RL:ND/RC:UR
Version: 4.0
Base score: 5.3
Base severity: 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
Version: 3.1
Base score: 6.3
Base severity: MEDIUM
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
Version: 3.0
Base score: 6.3
Base severity: MEDIUM
Vector:
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
Version: 2.0
Base score: 6.5
Base severity: N/A
Vector:
AV:N/AC:L/Au:S/C:P/I:P/A:P/E:POC/RL:ND/RC:UR
Metrics Other Info
Impacts
CAPEC IDDescription
Solutions

Configurations

Workarounds

Exploits

Credits

reporter
Eric-d (VulDB User)
coordinator
VulDB CNA Team
Timeline
EventDate
Advisory disclosed2026-07-17 00:00:00
VulDB entry created2026-07-17 02:00:00
VulDB entry last update2026-07-17 15:45:44
Event: Advisory disclosed
Date: 2026-07-17 00:00:00
Event: VulDB entry created
Date: 2026-07-17 02:00:00
Event: VulDB entry last update
Date: 2026-07-17 15:45:44
Replaced By

Rejected Reason

References
HyperlinkResource
https://vuldb.com/vuln/379791
vdb-entry
technical-description
https://vuldb.com/vuln/379791/cti
signature
permissions-required
https://vuldb.com/cve/CVE-2026-16076
third-party-advisory
https://vuldb.com/submit/852864
third-party-advisory
https://gist.github.com/YLChen-007/080ba55a71588dbbba3f27afed4c072c
exploit
Hyperlink: https://vuldb.com/vuln/379791
Resource:
vdb-entry
technical-description
Hyperlink: https://vuldb.com/vuln/379791/cti
Resource:
signature
permissions-required
Hyperlink: https://vuldb.com/cve/CVE-2026-16076
Resource:
third-party-advisory
Hyperlink: https://vuldb.com/submit/852864
Resource:
third-party-advisory
Hyperlink: https://gist.github.com/YLChen-007/080ba55a71588dbbba3f27afed4c072c
Resource:
exploit
Information is not available yet
â–¼National Vulnerability Database (NVD)
nvd.nist.gov
Source:cna@vuldb.com
Published At:18 Jul, 2026 | 06:16
Updated At:18 Jul, 2026 | 06:16

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.

CISA Catalog
Date AddedDue DateVulnerability NameRequired Action
N/A
Date Added: N/A
Due Date: N/A
Vulnerability Name: N/A
Required Action: N/A
Metrics
TypeVersionBase scoreBase severityVector
Secondary4.02.1LOW
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/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Primary3.16.3MEDIUM
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L
Secondary2.06.5MEDIUM
AV:N/AC:L/Au:S/C:P/I:P/A:P
Type: Secondary
Version: 4.0
Base score: 2.1
Base severity: LOW
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/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Type: Primary
Version: 3.1
Base score: 6.3
Base severity: MEDIUM
Vector:
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L
Type: Secondary
Version: 2.0
Base score: 6.5
Base severity: MEDIUM
Vector:
AV:N/AC:L/Au:S/C:P/I:P/A:P
CPE Matches

Weaknesses
CWE IDTypeSource
CWE-287Primarycna@vuldb.com
CWE-290Primarycna@vuldb.com
CWE ID: CWE-287
Type: Primary
Source: cna@vuldb.com
CWE ID: CWE-290
Type: Primary
Source: cna@vuldb.com
Evaluator Description

Evaluator Impact

Evaluator Solution

Vendor Statements

References
HyperlinkSourceResource
https://gist.github.com/YLChen-007/080ba55a71588dbbba3f27afed4c072ccna@vuldb.com
N/A
https://vuldb.com/cve/CVE-2026-16076cna@vuldb.com
N/A
https://vuldb.com/submit/852864cna@vuldb.com
N/A
https://vuldb.com/vuln/379791cna@vuldb.com
N/A
https://vuldb.com/vuln/379791/cticna@vuldb.com
N/A
Hyperlink: https://gist.github.com/YLChen-007/080ba55a71588dbbba3f27afed4c072c
Source: cna@vuldb.com
Resource: N/A
Hyperlink: https://vuldb.com/cve/CVE-2026-16076
Source: cna@vuldb.com
Resource: N/A
Hyperlink: https://vuldb.com/submit/852864
Source: cna@vuldb.com
Resource: N/A
Hyperlink: https://vuldb.com/vuln/379791
Source: cna@vuldb.com
Resource: N/A
Hyperlink: https://vuldb.com/vuln/379791/cti
Source: cna@vuldb.com
Resource: N/A

Change History

0
Information is not available yet

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