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Cross-Site Request Forgery (CSRF)


Severity High
Score 8.8/10


Fiber is an express-inspired web framework written in Go. A Cross-Site Request Forgery (CSRF) vulnerability has been identified in the application in versions prior to 2.50.0, 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. 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 a defense in depth measures. There are no known workarounds for this vulnerability.

  • LOW
  • HIGH
  • NONE
  • HIGH
  • HIGH

CWE-352 - Cross-Site Request Forgery (CSRF)

Cross-Site Request Forgery (CSRF) is a vulnerability that allows an attacker to make arbitrary requests in an authenticated vulnerable web application and disrupt the integrity of the victim’s session. The impact of a successful CSRF attack may range from minor to severe, depending upon the capabilities exposed by the vulnerable application and privileges of the user. An attacker may force the user to perform state-changing requests like transferring funds, changing their email address or password etc. However, if an administrative level account is affected, it may compromise the whole web application and associated sensitive data.

Advisory Timeline

  • Published