{"id":"CVE-2026-30246","summary":"github.com/gofiber/fiber/v3 cache middleware can mix responses across query parameters","details":"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.","aliases":["GHSA-35hp-hqmv-8qg8"],"modified":"2026-07-15T01:49:12.263779232Z","published":"2026-05-05T12:40:19.813Z","database_specific":{"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"},"references":[{"type":"WEB","url":"https://github.com/gofiber/fiber/blob/main/middleware/cache/cache_test.go#L599-L621"},{"type":"WEB","url":"https://github.com/gofiber/fiber/blob/main/middleware/cache/config.go#L90-L92"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/30xxx/CVE-2026-30246.json"},{"type":"ADVISORY","url":"https://github.com/gofiber/fiber/security/advisories/GHSA-35hp-hqmv-8qg8"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-30246"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/gofiber/fiber","events":[{"introduced":"9ba57651654b640c6859f624543e8ea51726d02b"},{"fixed":"3c24ebefe5009e88f9f9258b472e8021160179bf"}],"database_specific":{"extracted_events":[{"introduced":"v3.0.0-beta.2"},{"fixed":"3.1.0"},{"introduced":"0"},{"last_affected":"3.1.0"}],"source":["AFFECTED_FIELD","CPE_RANGE"],"cpe":"cpe:2.3:a:gofiber:fiber:*:*:*:*:*:go:*:*"}}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-30246.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N"}]}