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© 2026 FAUCET Technologies LLC. All rights reserved.

CVE-2026-30246

26
FAUCET Score

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.

First published: May 5, 2026Last modified: May 5, 2026

Impacted Technologies

VendorProductVersion(s)CPE
<= 3.1.0CPE matchmatch criteria
cpe:2.3:a:gofiber:fiber:*:*:*:*:*:go:*:*

CVSS Data

CVSS version used by this source: 3.1

6.5MEDIUM

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
LOW
Integrity Impact
LOW
Availability Impact
NONE
Exploitability Score
3.9
Impact Score
2.5
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.25%
Probability of exploitation in next 30 days
EPSS Percentile
16.6%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0025 is in the 7th percentile among its peer group of 23,705 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.0 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (2)

gopatch availablevia ghsa
Product: github.com/gofiber/fiber/v3Fixed in: 3.2.0
github_advisoryvendor investigatingvia nvd_reference
View patch

Vendor Advisories (1)

goGHSA-35hp-hqmv-8qg8medium

Fiber's cache middleware default key generator ignores query string, causing response mix-up across distinct query parameters

Apr 28, 2026

References

github.com / gofiber/fiber/blob/main/middleware/cache/cache_test.go
Product
github.com / gofiber/fiber/blob/main/middleware/cache/config.go
Product
github.com / gofiber/fiber/security/advisories/GHSA-35hp-hqmv-8qg8
ExploitVendor Advisory