CVE-2026-30246
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.
- CVSS 3.1
- 6.5
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N - EPSS
- 0.3% chance of exploitation in the next 30 days; higher than 16% of CVEs (scores of 2026-10-26)
- CWE
- CWE-436
- Published
- Modified
- Record from
- the NVD, synced
Affected
- gofiber:fiber
Packages (OSV)
| Advisory | Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|---|
| GHSA-35hp-hqmv-8qg8 | Go | github.com/gofiber/fiber/v3 | <3.2.0 | 3.2.0 |
| GO-2026-5069 | Go | github.com/gofiber/fiber/v3 | <3.2.0 | 3.2.0 |
References
- https://github.com/gofiber/fiber/blob/main/middleware/cache/cache_test.go#L599-L621
- https://github.com/gofiber/fiber/blob/main/middleware/cache/config.go#L90-L92
- https://github.com/gofiber/fiber/security/advisories/GHSA-35hp-hqmv-8qg8
- https://github.com/gofiber/fiber/security/advisories/GHSA-35hp-hqmv-8qg8