{"answers":{"affected":"3 open source packages ship an affected version, including go.etcd.io/etcd/v3 and etcd. It affects 1 product.","exploited":"There is no known exploitation of CVE-2021-28235 in the wild and no public exploit code.","fix":"Upgrade to a fixed version.","what":"CVE-2021-28235 is a critical vulnerability in n/a, published on 4 Apr 2023. An attacker can exploit it over the internet without logging in, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2021-28235 and fix it if it is affected.\n\nWhat it is: CVE-2021-28235 is a critical vulnerability in n/a, published on 4 Apr 2023. An attacker can exploit it over the internet without logging in, with no action from the victim.\nExploitation: There is no known exploitation of CVE-2021-28235 in the wild and no public exploit code.\n\nAffected packages and fixed versions:\n- go.etcd.io/etcd/v3 (Go): affected all versions; no fix listed\n- go.etcd.io/etcd/v3 (Go): affected all versions; no fix listed\n- etcd (Bitnami): affected from 3.4.10; fixed in 3.4.11\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-2021-28235/ (Markdown: https://insights.sbomify.com/CVE-2021-28235/index.md)","id":"CVE-2021-28235","markdown":"https://insights.sbomify.com/CVE-2021-28235/index.md","name":"CVE-2021-28235","record":{"aliases":["AZL-26139","BIT-etcd-2021-28235","DEBIAN-CVE-2021-28235","GHSA-gmph-wf7j-9gcm","UBUNTU-CVE-2021-28235","USN-6189-1","openSUSE-SU-2024:12896-1","openSUSE-SU-2024:13369-1","openSUSE-SU-2024:13370-1","openSUSE-SU-2024:13371-1"],"analysis":{"component_type":"server_software","fix_type":"upgrade","impacts":["privilege_escalation"],"network_reachable":"yes","non_default_config":false,"product_category":"etcd distributed key-value store","requires_auth":"none","summary":"Remote attackers can escalate privileges in etcd via the debug function, requiring administrators to upgrade to a patched version.","user_interaction":"not_required","vuln_class":"privilege_escalation"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"mitre","cpe":[{"product":"etcd","vendor":"etcd"}],"cvss":{"score":9.8,"severity":"critical","source":"nvd","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","version":"3.1"},"cwes":[{"id":"CWE-287","name":"Improper Authentication"}],"description":"Authentication vulnerability found in Etcd-io v.3.4.10 allows remote attackers to escalate privileges via the debug function.","ecosystems":["Bitnami","Go","openSUSE:Tumbleweed"],"exploits":{"exploitdb":0,"first_seen":"2026-07-10","github_poc":1,"max_poc_stars":0,"metasploit":0,"nuclei":0,"refs":[{"date":"2026-07-10T18:45:06Z","kind":"github_poc","ref":"https://github.com/h3ck13r/CVE-2021-28235","stars":0,"title":"CVE-2021-28235 PoC"}],"tier":"poc_unverified"},"has_fix":true,"headline":"Etcd-io Improper Authentication vulnerability","id":"CVE-2021-28235","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"Bitnami","product":null,"products":[],"type":"privilege_escalation","year":"2021"},"n_packages":7,"n_references":4,"next":{"headline":"Null dereference in n/a","id":"CVE-2021-28236"},"packages":[{"ecosystem":"Bitnami","fixed":["3.4.11"],"introduced":["3.4.10"],"last_affected":[],"package":"etcd","purl":"pkg:bitnami/etcd","source":"BIT-etcd-2021-28235"},{"ecosystem":"Go","fixed":[],"introduced":[],"last_affected":[],"package":"go.etcd.io/etcd/v3","purl":null,"source":"GHSA-gmph-wf7j-9gcm"},{"ecosystem":"Go","fixed":[],"introduced":[],"last_affected":[],"package":"go.etcd.io/etcd/v3","purl":"pkg:golang/go.etcd.io/etcd/v3","source":"GHSA-gmph-wf7j-9gcm"},{"ecosystem":"openSUSE:Tumbleweed","fixed":["3.5.8-1.1"],"introduced":["0"],"last_affected":[],"package":"etcd","purl":"pkg:rpm/opensuse/etcd\u0026distro=openSUSE%20Tumbleweed","source":"openSUSE-SU-2024:12896-1"},{"ecosystem":"openSUSE:Tumbleweed","fixed":["3.5.9-1.1"],"introduced":["0"],"last_affected":[],"package":"etcd-for-k8s1.25","purl":"pkg:rpm/opensuse/etcd-for-k8s1.25\u0026distro=openSUSE%20Tumbleweed","source":"openSUSE-SU-2024:13369-1"},{"ecosystem":"openSUSE:Tumbleweed","fixed":["3.5.9-1.1"],"introduced":["0"],"last_affected":[],"package":"etcd-for-k8s1.26","purl":"pkg:rpm/opensuse/etcd-for-k8s1.26\u0026distro=openSUSE%20Tumbleweed","source":"openSUSE-SU-2024:13370-1"},{"ecosystem":"openSUSE:Tumbleweed","fixed":["3.5.9-1.1"],"introduced":["0"],"last_affected":[],"package":"etcd-for-k8s1.27","purl":"pkg:rpm/opensuse/etcd-for-k8s1.27\u0026distro=openSUSE%20Tumbleweed","source":"openSUSE-SU-2024:13371-1"}],"prev":{"headline":"Memory corruption in n/a","id":"CVE-2021-28233"},"products":["n/a"],"published":"2023-04-04","related":[{"cvss_score":8.8,"headline":"etcd: Authorization bypasses in multiple APIs","id":"CVE-2026-33413","kev_date_added":null,"published":"2026-03-26"},{"cvss_score":7.5,"headline":"Denial of service in n/a","id":"CVE-2022-34038","kev_date_added":null,"published":"2023-08-22"},{"cvss_score":6.8,"headline":"go.etcd.io/etcd Authentication Bypass","id":"CVE-2018-16886","kev_date_added":null,"published":"2019-01-14"},{"cvss_score":6.5,"headline":"etcd: gRPC client listener does not enforce `--client-crl-file` certificate revocation","id":"CVE-2026-59818","kev_date_added":null,"published":"2026-07-08"},{"cvss_score":6.5,"headline":"Improper Input Validation in etcd","id":"CVE-2020-15106","kev_date_added":null,"published":"2020-08-05"},{"cvss_score":6.5,"headline":"Improper Input Validation in etcd","id":"CVE-2020-15112","kev_date_added":null,"published":"2020-08-05"}],"sources":[{"class":"attribution","licence":"Apache-2.0","name":"Bitnami","prefix":"BIT"},{"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":"SUSE","prefix":"openSUSE"},{"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)"},{"class":"open","licence":"CC0","name":"PoC-in-GitHub"}],"ssvc":{"automatable":"yes","exploitation":"none","technical_impact":"total"},"state":"PUBLISHED","updated":"2026-07-09","vendors":["n/a"]},"summary":"Remote attackers can escalate privileges in etcd via the debug function, requiring administrators to upgrade to a patched version.","url":"https://insights.sbomify.com/CVE-2021-28235/"}