Machine-written summary
Summary written by Claude Haiku from the source advisory. Not reviewed by a person.
Go Fiber v2 (github.com/gofiber/fiber/v2) versions before 2.50.0 have a CSRF flaw: the CSRF token was checked against stored tokens but not tied to the requester who generated it, so tokens could be reused. An attacker who can obtain a token can forge requests that perform actions as a logged-in user. Upgrade to version 2.50.0 or later.
Not analysed yet
We haven’t published our analysis of this Advisory yet. Once a person has reviewed it, this page will say what’s vulnerable, what has to be true for your app to be affected, and how to check.
Severity and exploitation
| Score | Rating | CVSS | Vector | Source |
|---|---|---|---|---|
| 8.6 | High | 3.1 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:H/A:L | CNA (GitHub_M) |
- CISA KEV Not listed.
- EPSS 0.0031, the 23rd percentile, on 5 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.
Timeline
- 31 Oct 2026, 14:15 UTC First seen by agentprime
- 31 Oct 2026, 14:15 UTC Confirmed by OSV
Sources
- GitHub Advisory Database: GHSA-mv73-f69x-444p
- OSV: GHSA-mv73-f69x-444p
- github.com/gofiber/fiber/security/advisories/GHSA-mv73-f69x-444p
- nvd.nist.gov/vuln/detail/CVE-2023-45141
- github.com/gofiber/fiber/commit/8c3916dbf4ad2ed427d02c6eb63ae8b2fa8f019a
- github.com/gofiber/fiber/commit/b50d91d58ecdff2a330bf07950244b6c4caf65b1
- github.com/gofiber/fiber