CVSS 3.1
6.5 mediumCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:NCVE-2021-29624
Medium (6.5) in fastify fastify-csrf. EPSS 0.8% chance of exploitation in the next 30 days. Fixed in fastify-csrf 3.1.0.
fastify-csrf is an open-source plugin helps developers protect their Fastify server against CSRF attacks. Versions of fastify-csrf prior to 3.1.0 have a "double submit" mechanism using cookies with an application deployed across multiple subdomains, e.g. "heroku"-style platform as a service. Version 3.1.0 of the fastify-csrf fixes it. the vulnerability. The user of the module would need to supply a `userInfo` when generating the CSRF token to fully implement the protection on their end. This is needed only for applications hosted on different subdomains.
Severity
- EPSS
- 0.8% chance of exploitation in the next 30 days; higher than 57% of CVEs (scores of 2026-10-31)
- CWEs
- CWE-352, CWE-565
- Published
- Modified
- Record from
- the NVD, synced
Affected
- fastify:fastify-csrf
Packages (OSV)
| Advisory | Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|---|
| GHSA-rc4q-9m69-gqp8 | npm | fastify-csrf | <3.1.0 | 3.1.0 |
References
- https://cheatsheetseries.owasp.org/cheatsheets/Cross-Site_Request_Forgery_Prevention_Cheat_Sheet.html
- https://github.com/fastify/csrf/pull/2
- https://github.com/fastify/fastify-csrf/pull/51
- https://github.com/fastify/fastify-csrf/releases/tag/v3.1.0
- https://github.com/fastify/fastify-csrf/security/advisories/GHSA-rc4q-9m69-gqp8