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CVE-2026-30246

6.5 · MEDIUM

Fiber is a web framework for Go.

Published May 5, 2026CWE-436EPSS 0.37%

Overview

CVE-2026-30246 is a medium-severity vulnerability. It was published on May 5, 2026 and has a CVSS 3.1 base score of 6.5 (MEDIUM).

This vulnerability has a CVSS 3.1 base score of 6.5, rated MEDIUM. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

Technical description

Fiber is a web framework for Go. In github.com/gofiber/fiber/v3 versions through 3.1.0, the default key generator in the cache middleware uses only the request path and does not include the query string. As a result, requests for the same path with different query parameters can share a cache key and receive the wrong cached response. This can cause response mix-up for query-dependent endpoints and may expose data intended for a different request. This issue is fixed after version 3.1.0.

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

GitHubgithub.com/gofiber/fiber/blob/main/middleware/cache/cache_test.go#L599-L621GitHubgithub.com/gofiber/fiber/blob/main/middleware/cache/config.go#L90-L92GitHubgithub.com/gofiber/fiber/security/advisories/GHSA-35hp-hqmv-8qg8GitHubgithub.com/gofiber/fiber/security/advisories/GHSA-35hp-hqmv-8qg8

How CyberStrike helps

Frequently asked questions

What is CVE-2026-30246?

CVE-2026-30246 is a medium-severity vulnerability. It was published on May 5, 2026 and has a CVSS 3.1 base score of 6.5 (MEDIUM).

How severe is CVE-2026-30246?

This vulnerability has a CVSS 3.1 base score of 6.5, rated MEDIUM. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2026-30246?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2026-30246?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2026-30246 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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