TI-2026-23477 Aliases CVE-2026-30246 GHSA-35hp-hqmv-8qg8

github.com/gofiber/fiber/v3 cache middleware can mix responses across query parameters

HIGH 68CWE-436Published 2026-05-05 · Updated 2026-05-05

Key facts

Attack vector: Network
Privileges required: None
User interaction: None
Attack complexity: Low
Impact type: Information disclosure
Confidentiality · integrity · availability: Low · Low · None
Fix status: Fixed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA and GitHub. Impact type from CWE-200.

Summary

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.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV

EPSS 0.00251 16th percentileScored 2026-11-07

Public exploit Yes 1 exploit referenceTagged by NVD

Fix Fixed fiber (gofiber): 3.1.0github.com/gofiber/fiber/v3 (Go): 3.2.0

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation: Poc
Automatable: Yes
Technical impact: Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
gofiber	fiber	v3.0.0-beta.2 to before 3.1.0	3.1.0	Patch available	CNA
—	github.com/gofiber/fiber/v3 (Go)	before 3.2.0	3.2.0	Patch available	GHSA-35hp-hqmv-8qg8

fiber Vendorgofiber Affected v3.0.0-beta.2 to before 3.1.0 Fixed in 3.1.0 Patch available CNA
github.com/gofiber/fiber/v3 (Go) Vendor— Affected before 3.2.0 Fixed in 3.2.0 Patch available GHSA-35hp-hqmv-8qg8

CPE configurations NVD · 1

CPE	Versions	Role	Vendor
cpe:2.3:a:gofiber:fiber::::::go::*	up to 3.1.0	Vulnerable	gofiber

cpe:2.3:a:gofiber:fiber:*:*:*:*:*:go:*:* Versions up to 3.1.0 Vulnerable ·gofiber

Remediation

Fix · CNA fiber (gofiber) Fixed in 3.1.0
Fix · GHSA-35hp-hqmv-8qg8 github.com/gofiber/fiber/v3 (Go) Fixed in 3.2.0 Advisory →

Vendor assessments

Red Hat

Red Hat's page for this CVE →

Not affected: 1 product

Red Hat

Timeline

2026-10-02 Threatist record created from CVE-2026-30246
2026-10-03 Alias added: GHSA-35hp-hqmv-8qg8

References

Exploit 1

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

Advisory 1

https://nvd.nist.gov/vuln/detail/CVE-2026-30246

Other 5

TI-2025-34555 Fiber Susceptible to Crash via `BodyParser` Due to Unvalidated Large Slice Index in Decoder CVSS 4.0HIGH 8.7
TI-2024-16578 Fiber has Insecure CORS Configuration, Allowing Wildcard Origin with Credentials CVSS 3.1CRITICAL 9.8
TI-2025-30446 Fiber panics when fiber.Ctx.BodyParser parses invalid range index CVSS 4.0HIGH 7.7
TI-2026-20922 Fiber has a Denial of Service Vulnerability via Route Parameter Overflow CVSS 4.0MEDIUM 5.5
TI-2026-30834 Fiber: XSS in AutoFormat Content Negotiation CVSS 4.0MEDIUM 5.3
TI-2026-38670 Fiber: HSTS header never set in helmet middleware due to incorrect protocol check CVSS 3.1MEDIUM 4.8

See all 16 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences