Medium 6.5Published May 5, 2026

CVE-2026-30246github.com/gofiber/fiber/v3 cache middleware can mix responses across query parameters

Updated under an hour ago (Oct 27, 2026, 5:30 AM ET)

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No exploitation reported and no EPSS estimate yet.

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Every CVE for gofiber fiber

Exploited in the last 30 days

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: 6.5 MEDIUM (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
Weakness (CWE): CWE-436
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: GitHub_M
NVD analysis: Analyzed
Record last updated: May 5, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

gofiber fiber gofiber:fiber (from the name)	from 3.0.0-beta.2, < 3.1.0	CNA record
gofiber fiber gofiber:fiber	through 3.1.0	NVD

References

References

https://github.com/gofiber/fiber/security/advisories/GHSA-35hp-hqmv-8qg8	x-refsource-confirm, exploit, vendor-advisory
https://github.com/gofiber/fiber/blob/main/middleware/cache/cache_test.go#L599-L621	x-refsource-misc, product
https://github.com/gofiber/fiber/blob/main/middleware/cache/config.go#L90-L92	x-refsource-misc, product

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.