{"answers":{"affected":"5 open source packages ship an affected version, including github.com/traefik/traefik/v3, github.com/traefik/traefik and github.com/traefik/traefik/v2. It affects 1 product.","exploited":"There is no known exploitation of CVE-2026-54762 in the wild and no public exploit code.","fix":"Upgrade github.com/traefik/traefik/v3 to 3.7.5 or later.","what":"CVE-2026-54762 is a medium-severity authentication bypass vulnerability in Traefik Traefik, published on 23 Jun 2026. It can only be exploited from the same machine or local network, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2026-54762 and fix it if it is affected.\n\nWhat it is: CVE-2026-54762 is a medium-severity authentication bypass vulnerability in Traefik Traefik, published on 23 Jun 2026. It can only be exploited from the same machine or local network, with no action from the victim.\nExploitation: There is no known exploitation of CVE-2026-54762 in the wild and no public exploit code.\n\nAffected packages and fixed versions:\n- github.com/traefik/traefik/v3 (Go): affected from 3.7.0-ea.1; fixed in 3.7.5\n- github.com/traefik/traefik/v3 (Go): affected from 3.7.0-ea.1; fixed in 3.7.5\n- github.com/traefik/traefik/v3 (Go): affected from 3.7.0-ea.1; fixed in 3.7.5\n- github.com/traefik/traefik (Go): affected all versions; no fix listed\n- github.com/traefik/traefik/v2 (Go): affected all versions; no fix listed\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-2026-54762/ (Markdown: https://insights.sbomify.com/CVE-2026-54762/index.md)","id":"CVE-2026-54762","markdown":"https://insights.sbomify.com/CVE-2026-54762/index.md","name":"CVE-2026-54762","record":{"aliases":["GHSA-4mr2-fg2p-w63c","GO-2026-5128","MINI-8c9w-whr5-8q74","MINI-hq6h-6qjj-xg8j","MINI-wh2h-hg5f-gprj"],"analysis":{"component_type":"server_software","fix_type":"upgrade","impacts":["security_bypass","data_read"],"network_reachable":"adjacent_or_local","non_default_config":true,"product_category":"Traefik reverse proxy","requires_auth":"high_privilege","summary":"Traefik fails open when authentication secrets are missing, allowing unauthenticated access to protected backend services.","user_interaction":"not_required","vuln_class":"auth_bypass"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"GitHub_M","cpe":[{"product":"traefik","vendor":"traefik"}],"cvss":{"score":5.9,"severity":"medium","source":"cna","vector":"CVSS:4.0/AV:L/AC:L/AT:N/PR:H/UI:N/VC:N/VI:N/VA:N/SC:H/SI:N/SA:N","version":"4.0"},"cwes":[{"id":"CWE-693","name":"Protection Mechanism Failure"},{"id":"CWE-636","name":"Not Failing Securely"}],"description":"Traefik is an HTTP reverse proxy and load balancer. From 3.7.0-ea.1 until 3.7.5, there is a medium severity vulnerability in Traefik's Kubernetes Ingress NGINX provider that causes affected routes to fail open. When an Ingress explicitly enables BasicAuth or DigestAuth through the supported nginx.ingress.kubernetes.io/auth-type and auth-secret annotations, but the referenced auth Secret cannot be resolved or parsed, Traefik logs the resolution error, skips installing the authentication middleware, and still emits a router to the backend service. A route that operators intended to protect is therefore published to the data plane without its authentication control, allowing unauthenticated access to the backend. The trigger is an invalid or unresolved auth dependency — a missing, malformed, unreadable, or policy-denied Secret — rather than an intentionally unprotected route. This vulnerability is fixed in 3.7.5.","ecosystems":["Go"],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"none_known"},"has_fix":true,"headline":"Traefik Kubernetes Ingress NGINX provider fails open when auth-secret resolution fails","id":"CVE-2026-54762","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"Go","product":"traefik:traefik","products":["traefik:traefik"],"type":"auth_bypass","year":"2026"},"n_packages":5,"n_references":2,"next":{"headline":"Traefik: headerField underscore-variant identity spoofing in BasicAuth / DigestAuth / ForwardAuth","id":"CVE-2026-54763"},"packages":[{"ecosystem":"Go","fixed":[],"introduced":["0"],"last_affected":[],"package":"github.com/traefik/traefik","purl":"pkg:golang/github.com/traefik/traefik","source":"GO-2026-5128"},{"ecosystem":"Go","fixed":[],"introduced":["0"],"last_affected":[],"package":"github.com/traefik/traefik/v2","purl":"pkg:golang/github.com/traefik/traefik/v2","source":"GO-2026-5128"},{"ecosystem":"Go","fixed":["3.7.5"],"introduced":["3.7.0-ea.1"],"last_affected":[],"package":"github.com/traefik/traefik/v3","purl":null,"source":"GHSA-4mr2-fg2p-w63c"},{"ecosystem":"Go","fixed":["3.7.5"],"introduced":["3.7.0-ea.1"],"last_affected":[],"package":"github.com/traefik/traefik/v3","purl":"pkg:golang/github.com/traefik/traefik/v3","source":"GHSA-4mr2-fg2p-w63c"},{"ecosystem":"Go","fixed":["3.7.5"],"introduced":["3.7.0-ea.1"],"last_affected":[],"package":"github.com/traefik/traefik/v3","purl":"pkg:golang/github.com/traefik/traefik/v3","source":"GO-2026-5128"}],"prev":{"headline":"Traefik: Kubernetes Gateway crossProviderNamespaces bypass allows HTTPRoute outside the allowlist to expose internal Traefik services","id":"CVE-2026-54761"},"products":["traefik"],"published":"2026-06-23","related":[{"cvss_score":9.8,"headline":"HTTP client can remove the X-Forwarded headers in Traefik","id":"CVE-2024-45410","kev_date_added":null,"published":"2024-09-19"},{"cvss_score":9.3,"headline":"Traefik v3.7.0 Authentication Bypass via from-to-www-redirect","id":"CVE-2026-88877","kev_date_added":null,"published":"2026-09-10"},{"cvss_score":9.3,"headline":"Traefik before v2.11.55 and v3.0.0 through v3.7.10 Authentication Bypass via digestAuth","id":"CVE-2026-85595","kev_date_added":null,"published":"2026-09-04"},{"cvss_score":9.1,"headline":"Traefik HTTP/3 Backend NTLM Connection Reuse","id":"CVE-2026-88007","kev_date_added":null,"published":"2026-09-10"},{"cvss_score":8.8,"headline":"Traefik: Rootless HTTP/1 request-target routes as \"/\" but is forwarded verbatim, bypassing path-scoped routing, middleware guards and access logging","id":"CVE-2026-88009","kev_date_added":null,"published":"2026-09-10"},{"cvss_score":8.8,"headline":"Traefik has a possible vulnerability with the path matchers","id":"CVE-2025-32431","kev_date_added":null,"published":"2025-04-21"},{"cvss_score":8.2,"headline":"Traefik v3.7 Authentication Bypass via TLS Option Conflict","id":"CVE-2026-85596","kev_date_added":null,"published":"2026-09-04"}],"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":"no","exploitation":"none","technical_impact":"partial"},"state":"PUBLISHED","updated":"2026-06-24","vendors":["traefik"]},"summary":"Traefik fails open when authentication secrets are missing, allowing unauthenticated access to protected backend services.","url":"https://insights.sbomify.com/CVE-2026-54762/"}