CVE-2026-54320Network attack vector

Cross-tenant organization takeover via unverified invitation email

Published Jun 23, 2026 · Updated Jun 23, 2026

Improper authentication in Daytona before 0.184.0 allows remote authenticated users to join another organization via a pending invitation. The invitation accept path compares the token email with the invitation address but fails to require the token's email-verification claim. Exploitation requires a known pending invitation and an identity provider that issues sessions before verification; the invitation's assigned role grants access up to Owner.

CVSS severity8.4
High
EPSS probability0.35%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Improper authentication in Daytona before 0.184.0 allows remote authenticated users to join another organization via a pending invitation. The invitation accept path compares the token email with the invitation address but fails to require the token's email-verification claim. Exploitation requires a known pending invitation and an identity provider that issues sessions before verification; the invitation's assigned role grants access up to Owner.

The record

CVE
CVE-2026-54320
Published
Jun 23, 2026
Updated
Jun 23, 2026
Vendor
Daytona
Product
Daytona
Classifications
CWE-287, CWE-863, T1078
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Jun 23, 2026CVE publishedPublication date reported by the CVE source.
  2. Jun 23, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=< 0.184.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Daytona · Daytonaversion=< 0.184.0

Published CVSS scores

8.4GitHub, Inc.CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:L

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-287Improper Authentication
CWE-863Incorrect Authorization
T1078Valid Accounts

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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