PT-2026-3642 · Unknown · Hotwired Turbo

CVE-2025-66803 · Published 2026-01-20 · Updated 2026-01-21

Positive Technologies (AI Summary)

CVSS v3.1

4.8

Medium

Base vector

AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N

Name of the Vulnerable Software and Affected Versions Hotwired Turbo versions prior to 8.0.0

Description A race condition exists in the turbo-frame element handler. This issue can cause logout operations to fail when delayed frame responses reapply session cookies after a user has logged out. Attackers can exploit this by introducing selective network delays or by leveraging naturally occurring race conditions on shared computers. This allows remote attackers to restore destroyed session cookies, potentially logging a user back in after they have logged out.

Recommendations Update Hotwired Turbo to version 8.0.0 or later.

Exploit

Fix

Race Condition

Insufficient Session Expiration

Time Of Check To Time Of Use

Weakness Enumeration

CWE-362

CWE-613

CWE-367

Related Identifiers

CVE-2025-66803

GHSA-QPPM-G56G-FPVP

Affected Products

Hotwired Turbo

References · 12

• 🔥 https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/66xxx/CVE-2025-66803.json · Exploit
• https://github.com/hotwired/turbo/pull/1399 · Patch
• https://github.com/hotwired/turbo/security/advisories/GHSA-qppm-g56g-fpvp · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2025-66803 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2025-66803 · Security Note
• https://osv.dev/vulnerability/GHSA-qppm-g56g-fpvp · Vendor Advisory
• https://github.com/hotwired/turbo · Note
• https://github.com/hotwired/turbo/commit/899df356e9f4b3303cca217cd14b3f846edda10d · Note
• https://github.com/hotwired/turbo/releases/tag/v8.0.21 · Note
• https://turbo.hotwired.dev/handbook/frames · Note
• https://twitter.com/_cvereports/status/2013688886111686949 · Twitter Post
• https://t.me/cveNotify/149417 · Telegram Post