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CVE-2026-30246
github.com/gofiber/fiber/v3 cache middleware can mix responses across query parameters
Medium6.5EPSS 0.25%
- Published
- Updated
- Reserved
- Assigned by
- GitHub_M
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.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| GitHub_MCNA (assigner) | 3.1 | Medium6.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N |
| NVDNVD · Analyzed | 3.1 | Medium6.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N |
- EPSS (exploitation in 30 days)
- 0.25% · top 83% of all CVEs (6 Nov 2026)
- CISA SSVC
- Exploitation: poc · Automatable: yes · Technical impact: partial
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The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 6.5.
Weakness
Affected products
Affected packages
From reviewed advisories of the GitHub Advisory Database.
- Gogithub.com/gofiber/fiber/v3GHSA-35hp-hqmv-8qg8 (opens in a new tab)
References (3)
- https://github.com/gofiber/fiber/security/advisories/GHSA-35hp-hqmv-8qg8 (opens in a new tab)x_refsource_CONFIRMexploit
- https://github.com/gofiber/fiber/blob/main/middleware/cache/cache_test.go#L599-L621 (opens in a new tab)x_refsource_MISC
- https://github.com/gofiber/fiber/blob/main/middleware/cache/config.go#L90-L92 (opens in a new tab)x_refsource_MISC
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisory GHSA-35hp-hqmv-8qg8 (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://trackcve.app/cve/CVE-2026-30246)Record last updated .