CVE-2025-66803

MEDIUM
4.8
CVSS 3.1
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CVSS Vector

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N
Attack Vector
Network
Attack Complexity
High
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
Low
Integrity
Low
Availability
None

Lifecycle Timeline

4
Patch Released
Mar 31, 2026 - 21:13 nvd
Patch available
Analysis Generated
Mar 12, 2026 - 21:54 vuln.today
PoC Detected
Jan 30, 2026 - 20:03 vuln.today
Public exploit code
CVE Published
Jan 20, 2026 - 19:15 nvd
MEDIUM 4.8

Description

Race condition in the turbo-frame element handler in Hotwired Turbo before 8.0.x causes logout operations to fail when delayed frame responses reapply session cookies after logout. This can be exploited by remote attackers via selective network delays (e.g. delaying requests based on sequence or timing) or by physically proximate attackers when the race condition occurs naturally on shared computers.

Analysis

Race condition in the turbo-frame element handler in Hotwired Turbo before 8.0.x causes logout operations to fail when delayed frame responses reapply session cookies after logout. This can be exploited by remote attackers via selective network delays (e.g. [CVSS 4.8 MEDIUM]

Technical Context

Classified as CWE-362 (Race Condition). Affects the turbo-frame element component of Turbo. Race condition in the turbo-frame element handler in Hotwired Turbo before 8.0.x causes logout operations to fail when delayed frame responses reapply session cookies after logout. This can be exploited by remote attackers via selective network delays (e.g. delaying requests based on sequence or timing) or by physically proximate attackers when the race condition occurs naturally on shared computers.

Affected Products

Vendor: Hotwired. Product: Turbo. Versions: up to 8.0.x. Component: turbo-frame element.

Remediation

Monitor vendor advisories for a patch. Restrict network access to the affected service where possible.

Priority Score

44
Low Medium High Critical
KEV: 0
EPSS: +0.1
CVSS: +24
POC: +20

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CVE-2025-66803 vulnerability details – vuln.today

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