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CVE Vulnerability Details :
CVE-2026-5321
PUBLISHED
More InfoOfficial Page
Assigner-VulDB
Assigner Org ID-1af790b2-7ee1-4545-860a-a788eba489b5
View Known Exploited Vulnerability (KEV) details
Published At-02 Apr, 2026 | 04:45
Updated At-02 Apr, 2026 | 18:30
Rejected At-
▼CVE Numbering Authority (CNA)
vanna-ai vanna FastAPI/Flask Server cross-domain policy

A flaw has been found in vanna-ai vanna up to 2.0.2. Affected by this issue is some unknown functionality of the component FastAPI/Flask Server. Executing a manipulation can lead to permissive cross-domain policy with untrusted domains. The attack can be launched remotely. The exploit has been published and may be used. The vendor was contacted early about this disclosure but did not respond in any way.

Affected Products
Vendor
vanna-ai
Product
vanna
Modules
  • FastAPI/Flask Server
Versions
Affected
  • 2.0.0
  • 2.0.1
  • 2.0.2
Problem Types
TypeCWE IDDescription
CWECWE-942Permissive Cross-domain Policy with Untrusted Domains
CWECWE-346Origin Validation Error
Type: CWE
CWE ID: CWE-942
Description: Permissive Cross-domain Policy with Untrusted Domains
Type: CWE
CWE ID: CWE-346
Description: Origin Validation Error
Metrics
VersionBase scoreBase severityVector
4.05.3MEDIUM
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:P
3.14.3MEDIUM
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N/E:P/RL:X/RC:R
3.04.3MEDIUM
CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N/E:P/RL:X/RC:R
2.04.0N/A
AV:N/AC:L/Au:S/C:N/I:P/A:N/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:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:P
Version: 3.1
Base score: 4.3
Base severity: MEDIUM
Vector:
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N/E:P/RL:X/RC:R
Version: 3.0
Base score: 4.3
Base severity: MEDIUM
Vector:
CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N/E:P/RL:X/RC:R
Version: 2.0
Base score: 4.0
Base severity: N/A
Vector:
AV:N/AC:L/Au:S/C:N/I:P/A:N/E:POC/RL:ND/RC:UR
Metrics Other Info
Impacts
CAPEC IDDescription
Solutions
Configurations
Workarounds
Exploits
Credits
reporter
Yu_Bao (VulDB User)
coordinator
VulDB
Timeline
EventDate
Advisory disclosed2026-04-01 00:00:00
VulDB entry created2026-04-01 02:00:00
VulDB entry last update2026-04-01 15:05:20
Event: Advisory disclosed
Date: 2026-04-01 00:00:00
Event: VulDB entry created
Date: 2026-04-01 02:00:00
Event: VulDB entry last update
Date: 2026-04-01 15:05:20
Replaced By
Rejected Reason
References
HyperlinkResource
https://vuldb.com/vuln/354653
vdb-entry
https://vuldb.com/vuln/354653/cti
signature
permissions-required
https://vuldb.com/submit/780729
third-party-advisory
https://github.com/August829/CVEP/issues/14
exploit
issue-tracking
Hyperlink: https://vuldb.com/vuln/354653
Resource:
vdb-entry
Hyperlink: https://vuldb.com/vuln/354653/cti
Resource:
signature
permissions-required
Hyperlink: https://vuldb.com/submit/780729
Resource:
third-party-advisory
Hyperlink: https://github.com/August829/CVEP/issues/14
Resource:
exploit
issue-tracking
▼Authorized Data Publishers (ADP)
CISA ADP Vulnrichment
Affected Products
Metrics
VersionBase scoreBase severityVector
Metrics Other Info
Impacts
CAPEC IDDescription
Solutions
Configurations
Workarounds
Exploits
Credits
Timeline
EventDate
Replaced By
Rejected Reason
References
HyperlinkResource
Details not found