CVE-2025-66803

low-risk
Published 2026-01-20

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.

Do I need to act?

-
0.05% chance of exploitation
EPSS score — low exploit probability
-
Not on CISA KEV list
No confirmed active exploitation reported to CISA
?
Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
4
CVSS 4.8/10 Medium
NETWORK / HIGH complexity

Affected Products (1)

Turbo

Affected Vendors

Hotwired

References (3)

Exploit https://github.com/hotwired/turbo/pull/1399
Vendor Advisory https://github.com/hotwired/turbo/security/advisories/GHSA-qppm-g56g-fpvp
Product https://turbo.hotwired.dev/handbook/frames
20
/ 100
low-risk
Severity 15/34 · Moderate
Exploitability 0/34 · Minimal
Exposure 5/34 · Minimal