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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.

PUBLISHED Reserved 2026-03-04 | Published 2026-05-05 | Updated 2026-05-05 | Assigner GitHub_M




MEDIUM: 6.5CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N

Problem types

CWE-436: Interpretation Conflict

Product status

>= v3.0.0-beta.2, < 3.1.0
affected

References

github.com/.../fiber/security/advisories/GHSA-35hp-hqmv-8qg8 exploit

github.com/.../fiber/security/advisories/GHSA-35hp-hqmv-8qg8

github.com/...fiber/blob/main/middleware/cache/cache_test.go

github.com/...ber/fiber/blob/main/middleware/cache/config.go

cve.org (CVE-2026-30246)

nvd.nist.gov (CVE-2026-30246)

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