Request forgery via plaintext CSRF-token cookie
Published Oct 7, 2022 · Updated Apr 23, 2025
Cleartext CSRF-token storage in tiny-csrf before 1.1.0 allows remote attackers to read protection tokens from client cookies. The csurf middleware writes randomUUID() directly into the csrfToken cookie and accepts equality with request query, parameter, or body input. Exploitation requires access to a victim's cookie; the disclosed token can then satisfy the middleware comparison and enable forged protected requests.
Summary
What happened
Cleartext CSRF-token storage in tiny-csrf before 1.1.0 allows remote attackers to read protection tokens from client cookies. The csurf middleware writes randomUUID() directly into the csrfToken cookie and accepts equality with request query, parameter, or body input. Exploitation requires access to a victim's cookie; the disclosed token can then satisfy the middleware comparison and enable forged protected requests.
The record
- CVE
- CVE-2022-39287
- Published
- Oct 7, 2022
- Updated
- Apr 23, 2025
- Vendor
- valexandersaulys
- Product
- tiny-csrf
- Classifications
- CWE-319
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- Oct 7, 2022CVE publishedPublication date reported by the CVE source.
- Apr 23, 2025Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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Is a vulnerable build present?
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- Affected versionversion=< 1.1.0
What conditions does exploitation require?
What is affected?
Published CVSS scores
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Attacks
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Weakness, pattern, technique
Public exploit references
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Technologies
Your stack
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Your stack
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