{"id":"CVE-2026-30246","sourceIdentifier":"security-advisories@github.com","published":"2026-05-05T13:16:28.820","lastModified":"2026-06-17T10:32:33.373","vulnStatus":"Analyzed","cveTags":[],"descriptions":[{"lang":"en","value":"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."}],"affected":[{"source":"security-advisories@github.com","affectedData":[{"vendor":"gofiber","product":"fiber","versions":[{"version":">= v3.0.0-beta.2, < 3.1.0","status":"affected"}]}]}],"metrics":{"cvssMetricV31":[{"source":"security-advisories@github.com","type":"Secondary","cvssData":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N","baseScore":6.5,"baseSeverity":"MEDIUM","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"NONE","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"LOW","integrityImpact":"LOW","availabilityImpact":"NONE"},"exploitabilityScore":3.9,"impactScore":2.5}],"ssvcV203":[{"source":"134c704f-9b21-4f2e-91b3-4a467353bcc0","ssvcData":{"timestamp":"2026-05-05T15:03:58.218760Z","id":"CVE-2026-30246","options":[{"exploitation":"poc"},{"automatable":"yes"},{"technicalImpact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}]},"weaknesses":[{"source":"security-advisories@github.com","type":"Secondary","description":[{"lang":"en","value":"CWE-436"}]}],"configurations":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:a:gofiber:fiber:*:*:*:*:*:go:*:*","versionEndIncluding":"3.1.0","matchCriteriaId":"F4D5D7B6-2F8B-461E-B59A-BAD18731F429"}]}]}],"references":[{"url":"https://github.com/gofiber/fiber/blob/main/middleware/cache/cache_test.go#L599-L621","source":"security-advisories@github.com","tags":["Product"]},{"url":"https://github.com/gofiber/fiber/blob/main/middleware/cache/config.go#L90-L92","source":"security-advisories@github.com","tags":["Product"]},{"url":"https://github.com/gofiber/fiber/security/advisories/GHSA-35hp-hqmv-8qg8","source":"security-advisories@github.com","tags":["Exploit","Vendor Advisory"]},{"url":"https://github.com/gofiber/fiber/security/advisories/GHSA-35hp-hqmv-8qg8","source":"134c704f-9b21-4f2e-91b3-4a467353bcc0","tags":["Exploit","Vendor Advisory"]}]}