{"answers":{"affected":"6 open source packages ship an affected version, including github.com/gofiber/fiber/v2 and github.com/gofiber/fiber/v3. It affects 1 product.","exploited":"It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-25882 exists.","fix":"Upgrade github.com/gofiber/fiber/v2 to 2.52.12 or later.","what":"CVE-2026-25882 is a medium-severity denial of service vulnerability in gofiber fiber, published on 24 Feb 2026. An attacker can exploit it over the internet without logging in, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2026-25882 and fix it if it is affected.\n\nWhat it is: CVE-2026-25882 is a medium-severity denial of service vulnerability in gofiber fiber, published on 24 Feb 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.\nExploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-25882 exists.\n\nAffected packages and fixed versions:\n- github.com/gofiber/fiber/v2 (Go): affected all versions; fixed in 2.52.12\n- github.com/gofiber/fiber/v2 (Go): affected all versions; fixed in 2.52.12\n- github.com/gofiber/fiber/v2 (Go): affected all versions; fixed in 2.52.12\n- github.com/gofiber/fiber/v3 (Go): affected all versions; fixed in 3.1.0\n- github.com/gofiber/fiber/v3 (Go): affected all versions; fixed in 3.1.0\n- github.com/gofiber/fiber/v3 (Go): affected all versions; fixed in 3.1.0\n\nTask:\n1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.\n2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.\n3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.\n4. Run the tests and summarise what changed and why.\n5. If nothing in the project is affected, say so and change nothing.\n\nReference: https://insights.sbomify.com/CVE-2026-25882/ (Markdown: https://insights.sbomify.com/CVE-2026-25882/index.md)","id":"CVE-2026-25882","markdown":"https://insights.sbomify.com/CVE-2026-25882/index.md","name":"CVE-2026-25882","record":{"aliases":["GHSA-mrq8-rjmw-wpq3","GO-2026-4543"],"analysis":{"component_type":"library","fix_type":"upgrade","impacts":["denial_of_service"],"network_reachable":"yes","non_default_config":false,"product_category":"Go web framework","requires_auth":"none","summary":"Remote attackers can crash Fiber web applications by sending requests with excessive route parameters, requiring an upgrade to patched versions.","user_interaction":"not_required","vuln_class":"denial_of_service"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"GitHub_M","cpe":[{"product":"fiber","vendor":"gofiber"}],"cvss":{"score":5.5,"severity":"medium","source":"cna","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P","version":"4.0"},"cwes":[{"id":"CWE-129","name":"Improper Validation of Array Index"}],"description":"Fiber is an Express inspired web framework written in Go. A denial of service vulnerability exists in Fiber v2 and v3 that allows remote attackers to crash the application by sending requests to routes with more than 30 parameters. The vulnerability results from missing validation during route registration combined with an unbounded array write during request matching. Version 2.52.12 patches the issue in the v2 branch and 3.1.0 patches the issue in the v3 branch.","ecosystems":["Go"],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"weaponised"},"has_fix":true,"headline":"Fiber has a Denial of Service Vulnerability via Route Parameter Overflow","id":"CVE-2026-25882","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"Go","product":null,"products":[],"type":"denial_of_service","year":"2026"},"n_packages":6,"n_references":4,"next":{"headline":"Vexa Webhook Feature has a SSRF Vulnerability","id":"CVE-2026-25883"},"packages":[{"ecosystem":"Go","fixed":["2.52.12"],"introduced":["0"],"last_affected":[],"package":"github.com/gofiber/fiber/v2","purl":null,"source":"GHSA-mrq8-rjmw-wpq3"},{"ecosystem":"Go","fixed":["2.52.12"],"introduced":["0"],"last_affected":[],"package":"github.com/gofiber/fiber/v2","purl":"pkg:golang/github.com/gofiber/fiber/v2","source":"GHSA-mrq8-rjmw-wpq3"},{"ecosystem":"Go","fixed":["2.52.12"],"introduced":["0"],"last_affected":[],"package":"github.com/gofiber/fiber/v2","purl":"pkg:golang/github.com/gofiber/fiber/v2","source":"GO-2026-4543"},{"ecosystem":"Go","fixed":["3.1.0"],"introduced":["0"],"last_affected":[],"package":"github.com/gofiber/fiber/v3","purl":null,"source":"GHSA-mrq8-rjmw-wpq3"},{"ecosystem":"Go","fixed":["3.1.0"],"introduced":["0"],"last_affected":[],"package":"github.com/gofiber/fiber/v3","purl":"pkg:golang/github.com/gofiber/fiber/v3","source":"GHSA-mrq8-rjmw-wpq3"},{"ecosystem":"Go","fixed":["3.1.0"],"introduced":["0"],"last_affected":[],"package":"github.com/gofiber/fiber/v3","purl":"pkg:golang/github.com/gofiber/fiber/v3","source":"GO-2026-4543"}],"prev":{"headline":"@nyariv/sandboxjs has host prototype pollution from sandbox via array intermediary (sandbox escape)","id":"CVE-2026-25881"},"products":["fiber"],"published":"2026-02-24","related":[{"cvss_score":10,"headline":"Fiber Session Middleware Token Injection Vulnerability","id":"CVE-2024-38513","kev_date_added":null,"published":"2024-07-01"},{"cvss_score":10,"headline":"CSRF Token Reuse Vulnerability in fiber","id":"CVE-2023-45128","kev_date_added":null,"published":"2023-10-16"},{"cvss_score":9.4,"headline":"Fiber has Insecure CORS Configuration, Allowing Wildcard Origin with Credentials","id":"CVE-2024-25124","kev_date_added":null,"published":"2024-02-21"},{"cvss_score":9.2,"headline":"Fiber insecurely fallsback in utils.UUIDv4() / utils.UUID() — predictable / zero‑UUID on crypto/rand failure","id":"CVE-2025-66630","kev_date_added":null,"published":"2026-02-09"},{"cvss_score":8.7,"headline":"Fiber Susceptible to Crash via `BodyParser` Due to Unvalidated Large Slice Index in Decoder","id":"CVE-2025-54801","kev_date_added":null,"published":"2025-08-05"},{"cvss_score":8.6,"headline":"CSRF Token Validation Vulnerability in fiber","id":"CVE-2023-45141","kev_date_added":null,"published":"2023-10-16"},{"cvss_score":7.7,"headline":"Fiber has an Arbitrary File Read in Static Middleware on Windows","id":"CVE-2026-25891","kev_date_added":null,"published":"2026-02-24"}],"sources":[{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"},{"class":"attribution","licence":"CC BY 4.0","name":"GitHub Advisory Database","prefix":"GHSA"},{"class":"attribution","licence":"CC BY 4.0","name":"Go Vulnerability Database","prefix":"GO"},{"class":"attribution","licence":"US public information, NVD API terms","name":"NVD"},{"class":"attribution","licence":"CWE Terms of Use","name":"CWE (MITRE)"},{"class":"attribution","licence":"FIRST CVSS licence","name":"CVSS (FIRST)"}],"ssvc":{"automatable":"yes","exploitation":"poc","technical_impact":"partial"},"state":"PUBLISHED","updated":"2026-02-24","vendors":["gofiber"]},"summary":"Remote attackers can crash Fiber web applications by sending requests with excessive route parameters, requiring an upgrade to patched versions.","url":"https://insights.sbomify.com/CVE-2026-25882/"}