{"action":"Upgrade github.com/gofiber/fiber/v3 to 3.2.0 or later.","affected":[{"fixed":"3.2.0","introduced":"0"}],"component":"github.com/gofiber/fiber/v3","cve_ids":["CVE-2026-42554"],"ecosystem":"Go","epss":0.00212,"exploited":false,"fixed_versions":["3.2.0"],"ghsa_id":"GHSA-qjv7-627w-8qjv","id":"tcs_01M5KGNDFSZ51NVHYPF028V6YS","modified_at":"2026-07-24T19:00:24.231440095Z","published_at":"2026-07-24T18:35:55Z","references":["https://osv.dev/vulnerability/GO-2026-5585","https://github.com/gofiber/fiber/security/advisories/GHSA-qjv7-627w-8qjv"],"severity":{"label":"medium","score":6.1},"sources":[{"source":"osv","source_id":"GO-2026-5585#Go/github.com/gofiber/fiber/v3","url":"https://osv.dev/vulnerability/GO-2026-5585"},{"source":"nvd","source_id":"CVE-2026-42554","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-42554"}],"summary":"Fiber vulnerable to XSS in AutoFormat Content Negotiation in github.com/gofiber/fiber"}