{"answers":{"affected":"7 open source packages ship an affected version, including github.com/traefik/traefik/v2, github.com/traefik/traefik and github.com/traefik/traefik/v3.","exploited":"There is no known exploitation of GHSA-4hjq-9h5c-252j in the wild and no public exploit code.","fix":"Upgrade github.com/traefik/traefik/v2 to 2.11.40 or later.","what":"GHSA-4hjq-9h5c-252j is a denial of service vulnerability in github.com/traefik/traefik, published on 12 Mar 2026. An attacker can exploit it over the internet without logging in, with no action from the victim."},"fix_prompt":"Check this codebase for GHSA-4hjq-9h5c-252j and fix it if it is affected.\n\nWhat it is: GHSA-4hjq-9h5c-252j is a denial of service vulnerability in github.com/traefik/traefik, published on 12 Mar 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.\nExploitation: There is no known exploitation of GHSA-4hjq-9h5c-252j in the wild and no public exploit code.\n\nAffected packages and fixed versions:\n- github.com/traefik/traefik/v2 (Go): affected all versions; fixed in 2.11.40\n- github.com/traefik/traefik/v2 (Go): affected all versions; fixed in 2.11.40\n- github.com/traefik/traefik/v2 (Go): affected all versions; fixed in 2.11.40\n- github.com/traefik/traefik (Go): affected all versions; no fix listed\n- github.com/traefik/traefik/v3 (Go): affected all versions; fixed in 3.6.10\n- github.com/traefik/traefik/v3 (Go): affected all versions; fixed in 3.6.10\n- github.com/traefik/traefik/v3 (Go): affected all versions; fixed in 3.6.10\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/GHSA-4hjq-9h5c-252j/ (Markdown: https://insights.sbomify.com/GHSA-4hjq-9h5c-252j/index.md)","id":"GHSA-4hjq-9h5c-252j","markdown":"https://insights.sbomify.com/GHSA-4hjq-9h5c-252j/index.md","name":"GHSA-4hjq-9h5c-252j","record":{"aliases":["GO-2026-4684"],"analysis":{"component_type":"server_software","fix_type":"upgrade","impacts":["denial_of_service"],"network_reachable":"yes","non_default_config":false,"product_category":"Reverse proxy server","requires_auth":"none","summary":"Traefik server panics when processing malicious HTTP/2 frames, causing a denial of service for administrators running the proxy.","user_interaction":"not_required","vuln_class":"denial_of_service"},"analysis_generated_by":"qwen3.8-flash-next","assigner":null,"cpe":[],"cvss":{"score":null,"severity":null,"source":null,"vector":null,"version":null},"cwes":[],"description":"## Summary\n\nMore Details:\n- https://nvd.nist.gov/vuln/detail/CVE-2026-27141\n- https://pkg.go.dev/golang.org/x/net/http2?tab=versions\n\n## Patches\n\n- https://github.com/traefik/traefik/releases/tag/v3.6.10\n- https://github.com/traefik/traefik/releases/tag/v2.11.40\n\n## For more information\n\nIf you have any questions or comments about this advisory, please [open an issue](https://github.com/traefik/traefik/issues).","ecosystems":["Go"],"exploits":{"exploitdb":null,"first_seen":null,"github_poc":null,"max_poc_stars":null,"metasploit":null,"nuclei":null,"refs":[],"tier":null},"has_fix":true,"headline":"Traefik: HTTP/2 frames can cause a running server to panic","id":"GHSA-4hjq-9h5c-252j","indexable":true,"kev":null,"kind":"advisory","links":{"ecosystem":"Go","product":null,"products":[],"type":"denial_of_service","year":"2026"},"n_packages":7,"n_references":null,"packages":[{"ecosystem":"Go","fixed":[],"introduced":["0"],"last_affected":[],"package":"github.com/traefik/traefik","purl":"pkg:golang/github.com/traefik/traefik","source":"GO-2026-4684"},{"ecosystem":"Go","fixed":["2.11.40"],"introduced":["0"],"last_affected":[],"package":"github.com/traefik/traefik/v2","purl":null,"source":"GHSA-4hjq-9h5c-252j"},{"ecosystem":"Go","fixed":["2.11.40"],"introduced":["0"],"last_affected":[],"package":"github.com/traefik/traefik/v2","purl":"pkg:golang/github.com/traefik/traefik/v2","source":"GHSA-4hjq-9h5c-252j"},{"ecosystem":"Go","fixed":["2.11.40"],"introduced":["0"],"last_affected":[],"package":"github.com/traefik/traefik/v2","purl":"pkg:golang/github.com/traefik/traefik/v2","source":"GO-2026-4684"},{"ecosystem":"Go","fixed":["3.6.10"],"introduced":["0"],"last_affected":[],"package":"github.com/traefik/traefik/v3","purl":null,"source":"GHSA-4hjq-9h5c-252j"},{"ecosystem":"Go","fixed":["3.6.10"],"introduced":["0"],"last_affected":[],"package":"github.com/traefik/traefik/v3","purl":"pkg:golang/github.com/traefik/traefik/v3","source":"GHSA-4hjq-9h5c-252j"},{"ecosystem":"Go","fixed":["3.6.10"],"introduced":["0"],"last_affected":[],"package":"github.com/traefik/traefik/v3","purl":"pkg:golang/github.com/traefik/traefik/v3","source":"GO-2026-4684"}],"products":null,"published":"2026-03-12","related":[],"sources":[{"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"}],"ssvc":{"automatable":null,"exploitation":null,"technical_impact":null},"state":null,"updated":null,"vendors":null},"summary":"Traefik server panics when processing malicious HTTP/2 frames, causing a denial of service for administrators running the proxy.","url":"https://insights.sbomify.com/GHSA-4hjq-9h5c-252j/"}