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Vulnerability Details :

CVE-2026-54320

Summary
Assigner-GitHub_M
Assigner Org ID-a0819718-46f1-4df5-94e2-005712e83aaa
Published At-23 Jun, 2026 | 18:11
Updated At-23 Jun, 2026 | 18:11
Rejected At-
Credits

Daytona: Cross-tenant organization takeover via invitation acceptance with an unverified email

Daytona is a secure and elastic infrastructure runtime for AI-generated code execution and agent workflows. Prior to 0.184.0, organization invitations could be accepted (and declined) by a user whose email matched the invitation but had not been verified. Daytona authenticates users via OIDC and matches an invitation's target email against the email in the caller's token, but the invitation accept and decline paths did not require that email to be verified, unlike organization creation, which already enforced verification. On identity providers that allow self-service signup and issue a session before the email is verified, an actor could register an address matching a pending invitation, leave it unverified, and accept the invitation, joining the target organization with the role the invitation carried (up to Owner). This vulnerability is fixed in 0.184.0.

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)
▼Common Vulnerabilities and Exposures (CVE)
cve.org
Assigner:GitHub_M
Assigner Org ID:a0819718-46f1-4df5-94e2-005712e83aaa
Published At:23 Jun, 2026 | 18:11
Updated At:23 Jun, 2026 | 18:11
Rejected At:
▼CVE Numbering Authority (CNA)
Daytona: Cross-tenant organization takeover via invitation acceptance with an unverified email

Daytona is a secure and elastic infrastructure runtime for AI-generated code execution and agent workflows. Prior to 0.184.0, organization invitations could be accepted (and declined) by a user whose email matched the invitation but had not been verified. Daytona authenticates users via OIDC and matches an invitation's target email against the email in the caller's token, but the invitation accept and decline paths did not require that email to be verified, unlike organization creation, which already enforced verification. On identity providers that allow self-service signup and issue a session before the email is verified, an actor could register an address matching a pending invitation, leave it unverified, and accept the invitation, joining the target organization with the role the invitation carried (up to Owner). This vulnerability is fixed in 0.184.0.

Affected Products
Vendor
daytonaio
Product
daytona
Versions
Affected
  • < 0.184.0
Problem Types
TypeCWE IDDescription
CWECWE-287CWE-287: Improper Authentication
CWECWE-863CWE-863: Incorrect Authorization
Type: CWE
CWE ID: CWE-287
Description: CWE-287: Improper Authentication
Type: CWE
CWE ID: CWE-863
Description: CWE-863: Incorrect Authorization
Metrics
VersionBase scoreBase severityVector
3.18.4HIGH
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:L
Version: 3.1
Base score: 8.4
Base severity: HIGH
Vector:
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:L
Metrics Other Info
Impacts
CAPEC IDDescription
Solutions

Configurations

Workarounds

Exploits

Credits

Timeline
EventDate
Replaced By

Rejected Reason

References
HyperlinkResource
https://github.com/daytonaio/daytona/security/advisories/GHSA-m6hx-cffh-3f3h
x_refsource_CONFIRM
Hyperlink: https://github.com/daytonaio/daytona/security/advisories/GHSA-m6hx-cffh-3f3h
Resource:
x_refsource_CONFIRM
Information is not available yet
▼National Vulnerability Database (NVD)
nvd.nist.gov
Source:security-advisories@github.com
Published At:23 Jun, 2026 | 19:17
Updated At:23 Jun, 2026 | 19:35

Daytona is a secure and elastic infrastructure runtime for AI-generated code execution and agent workflows. Prior to 0.184.0, organization invitations could be accepted (and declined) by a user whose email matched the invitation but had not been verified. Daytona authenticates users via OIDC and matches an invitation's target email against the email in the caller's token, but the invitation accept and decline paths did not require that email to be verified, unlike organization creation, which already enforced verification. On identity providers that allow self-service signup and issue a session before the email is verified, an actor could register an address matching a pending invitation, leave it unverified, and accept the invitation, joining the target organization with the role the invitation carried (up to Owner). This vulnerability is fixed in 0.184.0.

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
Secondary3.18.4HIGH
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:L
Type: Secondary
Version: 3.1
Base score: 8.4
Base severity: HIGH
Vector:
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:L
CPE Matches

Weaknesses
CWE IDTypeSource
CWE-287Primarysecurity-advisories@github.com
CWE-863Primarysecurity-advisories@github.com
CWE ID: CWE-287
Type: Primary
Source: security-advisories@github.com
CWE ID: CWE-863
Type: Primary
Source: security-advisories@github.com
Evaluator Description

Evaluator Impact

Evaluator Solution

Vendor Statements

References
HyperlinkSourceResource
https://github.com/daytonaio/daytona/security/advisories/GHSA-m6hx-cffh-3f3hsecurity-advisories@github.com
N/A
Hyperlink: https://github.com/daytonaio/daytona/security/advisories/GHSA-m6hx-cffh-3f3h
Source: security-advisories@github.com
Resource: N/A

Change History

0
Information is not available yet

Similar CVEs

3Records found

CVE-2026-54324
Matching Score-6
Assigner-GitHub, Inc.
ShareView Details
Matching Score-6
Assigner-GitHub, Inc.
CVSS Score-6.5||MEDIUM
EPSS-Not Assigned
Published-23 Jun, 2026 | 18:07
Updated-23 Jun, 2026 | 19:35
Rejected-Not Available
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Daytona: Cross-tenant data leak in notification WebSocket gateway via unverified organizationId join

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Action-Not Available
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Product-daytona
CWE ID-CWE-639
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CWE ID-CWE-863
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CVE-2026-54321
Matching Score-6
Assigner-GitHub, Inc.
ShareView Details
Matching Score-6
Assigner-GitHub, Inc.
CVSS Score-7||HIGH
EPSS-Not Assigned
Published-23 Jun, 2026 | 18:10
Updated-23 Jun, 2026 | 19:35
Rejected-Not Available
Known To Be Used In Ransomware Campaigns?-Not Available
KEV Added-Not Available
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Daytona: Public sandbox previews remain accessible for up to one hour after being made private

Daytona is a secure and elastic infrastructure runtime for AI-generated code execution and agent workflows. From 0.101.0 until 0.184.0, sandbox previews that were switched from public to private could remain reachable without authentication for a short period after the change, due to a cached visibility state that was not invalidated when the sandbox's visibility changed. This vulnerability is fixed in 0.184.0.

Action-Not Available
Vendor-daytonaio
Product-daytona
CWE ID-CWE-613
Insufficient Session Expiration
CWE ID-CWE-863
Incorrect Authorization
CVE-2026-45108
Matching Score-4
Assigner-GitHub, Inc.
ShareView Details
Matching Score-4
Assigner-GitHub, Inc.
CVSS Score-8.4||HIGH
EPSS-0.24% / 15.45%
||
7 Day CHG~0.00%
Published-27 May, 2026 | 18:53
Updated-01 Jun, 2026 | 18:31
Rejected-Not Available
Known To Be Used In Ransomware Campaigns?-Not Available
KEV Added-Not Available
KEV Action Due Date-Not Available
Himmelblau: Authentication Bypass via Cross-User Local Session Impersonation in Device Authorization Grant (DAG) Flow

Himmelblau is an interoperability suite for Microsoft Azure Entra ID and Intune. From 2.0.0 to before 3.1.5 and 2.3.11, Himmelblau contained an authentication bypass vulnerability in the Device Authorization Grant (DAG) flow that allowed a user within the same Entra ID domain to obtain a local Unix session as another user by providing their own valid credentials. The vulnerability existed in the token_validate function, which validated domain aliases for legitimate multi-domain scenarios but failed to verify that the local part (username) of the authenticated user's UPN matched the requested account username. The function only compared domains, not the complete usernames. This vulnerability is fixed in 3.1.5 and 2.3.11.

Action-Not Available
Vendor-himmelblau-idm
Product-himmelblau
CWE ID-CWE-863
Incorrect Authorization
Details not found