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.
{
"cna_assigner": "GitHub_M",
"cwe_ids": [
"CWE-436"
],
"osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/30xxx/CVE-2026-30246.json"
}{
"extracted_events": [
{
"introduced": "v3.0.0-beta.2"
},
{
"fixed": "3.1.0"
},
{
"introduced": "0"
},
{
"last_affected": "3.1.0"
}
],
"cpe": "cpe:2.3:a:gofiber:fiber:*:*:*:*:*:go:*:*",
"source": [
"AFFECTED_FIELD",
"CPE_RANGE"
]
}