CVE-2023-45128 CSRF Token Reuse Vulnerability in fiber
Attackers can forge malicious requests on behalf of users due to improper CSRF token validation in the Fiber Go web framework.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2023-45128?
CVE-2023-45128 is a critical vulnerability in gofiber fiber, published on 16 Oct 2023. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
Fiber is an express inspired web framework written in Go. A Cross-Site Request Forgery (CSRF) vulnerability has been identified in the application, which allows an attacker to inject arbitrary values and forge malicious requests on behalf of a user. This vulnerability can allow an attacker to inject arbitrary values without any authentication, or perform various malicious actions on behalf of an authenticated user, potentially compromising the security and integrity of the application. The vulnerability is caused by improper validation and enforcement of CSRF tokens within the application. This issue has been addressed in version 2.50.0 and users are advised to upgrade. Users should take additional security measures like captchas or Two-Factor Authentication (2FA) and set Session cookies with SameSite=Lax or SameSite=Secure, and the Secure and HttpOnly attributes as defense in depth measures. There are no known workarounds for this vulnerability.
Which versions are affected by CVE-2023-45128?
3 open source packages ship an affected version, including github.com/gofiber/fiber/v2. It affects 1 product.
| Package | Affected | Fixed in |
|---|---|---|
github.com/gofiber/fiber/v2 Go | All versions | 2.50.0 |
github.com/gofiber/fiber/v2 Go | All versions | 2.50.0 |
github.com/gofiber/fiber/v2 Go | All versions | 2.50.0 |
Products include Gofiber Fiber.
How do I fix CVE-2023-45128?
Upgrade github.com/gofiber/fiber/v2 to 2.50.0 or later.
Is CVE-2023-45128 being exploited?
There is no known exploitation of CVE-2023-45128 in the wild and no public exploit code.
Other vulnerabilities in gofiber fiber
- CVE-2024-38513 Fiber Session Middleware Token Injection Vulnerability
- CVE-2024-25124 Fiber has Insecure CORS Configuration, Allowing Wildcard Origin with Credentials
- CVE-2025-66630 Fiber insecurely fallsback in utils.UUIDv4() / utils.UUID() — predictable / zero‑UUID on crypto/rand failure
- CVE-2025-54801 Fiber Susceptible to Crash via `BodyParser` Due to Unvalidated Large Slice Index in Decoder
- CVE-2023-45141 CSRF Token Validation Vulnerability in fiber
Sources
Also known as GHSA-94w9-97p3-p368, GO-2023-2115.