{"answers":{"affected":"8 open source packages ship an affected version, including go.etcd.io/etcd/v3, etcd and go.etcd.io/etcd/client/pkg/v3.","exploited":"There is no known exploitation of CVE-2026-73500 in the wild and no public exploit code.","fix":"Upgrade go.etcd.io/etcd/v3 to a fixed version for your release line: 3.5.33, 3.6.14 or 3.7.1.","what":"CVE-2026-73500 is a high-severity denial of service vulnerability in etcd-io etcd, published on 12 Aug 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-2026-73500 and fix it if it is affected.\n\nWhat it is: CVE-2026-73500 is a high-severity denial of service vulnerability in etcd-io etcd, published on 12 Aug 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 CVE-2026-73500 in the wild and no public exploit code.\n\nAffected packages and fixed versions:\n- go.etcd.io/etcd/v3 (Go): affected all versions; fixed in 3.5.33\n- go.etcd.io/etcd/v3 (Go): affected all versions; fixed in 3.5.33\n- go.etcd.io/etcd/v3 (Go): affected from 3.6.0; fixed in 3.6.14\n- go.etcd.io/etcd/v3 (Go): affected from 3.6.0; fixed in 3.6.14\n- go.etcd.io/etcd/v3 (Go): affected from 3.7.0-alpha.0; fixed in 3.7.1\n- go.etcd.io/etcd/v3 (Go): affected from 3.7.0-alpha.0; fixed in 3.7.1\n- etcd (Bitnami): affected all versions; fixed in 3.5.33, 3.6.14, 3.7.1\n- go.etcd.io/etcd/client/pkg/v3 (Go): affected all versions; fixed in 3.5.33, 3.6.14, 3.7.1\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-2026-73500/ (Markdown: https://insights.sbomify.com/CVE-2026-73500/index.md)","id":"CVE-2026-73500","markdown":"https://insights.sbomify.com/CVE-2026-73500/index.md","name":"CVE-2026-73500","record":{"aliases":["AZL-95901","AZL-95907","AZL-95913","AZL-95931","AZL-95934","AZL-95937","AZL-95946","BELL-CVE-2026-73500","BIT-etcd-2026-73500","CLEANSTART-2026-AJ86283","CLEANSTART-2026-AZ15466","CLEANSTART-2026-CG80075","CLEANSTART-2026-FO24538","CLEANSTART-2026-GV84967","CLEANSTART-2026-IC69892","CLEANSTART-2026-JT10242","CLEANSTART-2026-JU24035","CLEANSTART-2026-MP84668","CLEANSTART-2026-MV90094","CLEANSTART-2026-ST96789","CLEANSTART-2026-TI06135","CLEANSTART-2026-ZK46076","DEBIAN-CVE-2026-73500","ECHO-ffe1-bcbe-9b33","GHSA-6vch-q96h-7gc3","GO-2026-6107","MINI-23cm-9gcx-rcxx","MINI-248x-pvcw-hhw6","MINI-25j2-x58m-crqx","MINI-25pr-qv6w-43cr","MINI-2683-3wmr-5hm3","MINI-27rr-76f7-vghf","MINI-27x4-jcjm-r53v","MINI-2frv-r4xf-3xjw","MINI-2g8r-39hj-7c69","MINI-2gf5-fvwh-79gv","MINI-2gqh-rg9q-mw3r","MINI-2h6w-9m22-qw5g","MINI-2j35-6jg6-xcx5","MINI-2p6g-v58h-j5ch","MINI-2q83-m95p-rjvm","MINI-2x6r-fgw4-hg9f","MINI-3423-h5gg-87m6","MINI-34q3-87f4-hvr4","MINI-36x9-mf3j-j6x3","MINI-37fx-2278-2x8m","MINI-37x8-mmq9-8c26","MINI-3874-fp6m-rc3x","MINI-3952-ff24-c292","MINI-3fv7-vxcc-6gf5","MINI-3gqj-47fm-rpr2","MINI-3jv8-452w-9p7q","MINI-3vvm-4cr8-vwc6","MINI-43m7-xmxj-2grh","MINI-442q-fjc2-qm2q","MINI-44jr-6vc3-8crm","MINI-44m4-jwh4-m9p3","MINI-456p-qmf7-66j4","MINI-45w9-5q93-x698","MINI-46hq-p8f9-656q","MINI-483m-3pgr-hg5h","MINI-48ch-wpj5-q678","MINI-49x2-x9p9-2pmv","MINI-49xq-g7x8-p372","MINI-4gm9-58r5-fw7f","MINI-4mmc-cwhv-f8c7","MINI-4qpw-6jq3-5r43","MINI-4rq4-jgc6-r436","MINI-4v96-ggv8-796f","MINI-4vjx-rfc3-9fcj","MINI-4wm2-pwcq-6rgq","MINI-57xj-25v4-hx22","MINI-588f-6mp5-759g","MINI-5892-5482-x5xv","MINI-592f-hg4h-f53p","MINI-5h2r-9mx9-xqvq","MINI-5pfw-fqhv-mc54","MINI-5ph7-w68g-h263","MINI-5w8x-rxvh-5c2j","MINI-5xr9-h8xp-8v5x","MINI-6255-pm4g-wf8x","MINI-63v3-65pw-qpx8","MINI-65g4-6hp3-w69v","MINI-6767-mqw7-wq62","MINI-67cp-27cm-h37g","MINI-67qg-3x9f-hjv5","MINI-68q5-3r39-qqj8","MINI-69q4-4hrh-c34g","MINI-69wh-c2p2-4g76","MINI-6h7w-3r94-mw9w","MINI-6jq8-qgcm-57f5","MINI-6jrf-2586-chjc","MINI-6m49-j77j-33h8","MINI-6w2r-752c-w334","MINI-6wg5-9cm2-qp42","MINI-6x8p-2p8g-pq84","MINI-6xgc-hc97-ggfw","MINI-738p-xfrm-v3q8","MINI-73h8-vg54-43pr","MINI-73xq-q5qv-97h4","MINI-769p-98pp-g92g","MINI-774f-pc55-jh45","MINI-7925-4gjm-hx6r","MINI-79gg-f776-w44m","MINI-7c3m-8x5m-p2vj","MINI-7c8f-r7fv-4gp6","MINI-7hrv-pjw3-6m86","MINI-7hxm-5vjr-gqp6","MINI-7j94-p622-crq5","MINI-7m3j-rp7q-9p6q","MINI-7m4m-2gvf-wxwq","MINI-7p2r-9c4h-2h3v","MINI-7p55-68c8-qmhf","MINI-7x4h-5w5m-9cgg","MINI-824c-5h3m-56v6","MINI-82rm-qfvf-65gr","MINI-83w3-c8xq-h44h","MINI-865p-4g4r-wprc","MINI-8698-8jwp-h935","MINI-86pw-fqgg-vxw7","MINI-873p-h3ww-rv6j","MINI-89xm-m6p8-f2q5","MINI-8cf6-7ccp-c464","MINI-8gqv-6jvf-qrpm","MINI-8m95-mch2-6rhp","MINI-8q57-963c-rxmq","MINI-8rqx-hggv-7fhm","MINI-8xjv-v25g-996j","MINI-94hq-pfhw-rpm4","MINI-94xq-phqh-9x9v","MINI-95r3-qmjw-6r49","MINI-96wx-8wrf-rpc6","MINI-9c3w-rwwp-h9r4","MINI-9fpx-wfcr-cmjc","MINI-9h62-4c58-hx5v","MINI-9j54-fgg3-hvw3","MINI-9m59-h3fp-999v","MINI-9mr3-67v3-gpvm","MINI-9mrh-8vxc-h28w","MINI-9p63-wjh5-cm6w","MINI-9pr8-jw49-4484","MINI-9pxr-5pxv-xj5v","MINI-9rpf-436h-w3rq","MINI-9x9c-2q8m-4646","MINI-9xvc-gj8v-995x","MINI-c26w-v3x6-c3x6","MINI-c695-xp46-xm95","MINI-c74h-x4wc-m3gx","MINI-c8g7-344x-qqgm","MINI-c8m3-44p3-rvcp","MINI-c9f2-j3gc-9wh2","MINI-chh9-4jjv-mhc6","MINI-cqmr-c563-m567","MINI-cr94-p379-3fhv","MINI-cw93-37pr-fcj8","MINI-cx7g-4c2c-p742","MINI-f259-p323-c6qp","MINI-f35m-23xw-p727","MINI-f45g-r7q4-4pph","MINI-f4xr-8j3v-xprm","MINI-f59w-h327-j6hf","MINI-f7jh-4m8g-pgqg","MINI-f867-7rqh-59mw","MINI-f89m-3x9q-qrr6","MINI-fc3r-5mqv-6rxx","MINI-ff5m-5q28-2w6c","MINI-fj3q-xp2c-cw4j","MINI-fmwm-rcqc-cq33","MINI-fp4p-4rpp-gf4w","MINI-fp7j-5j9p-32qf","MINI-frv4-vmj5-ccxp","MINI-fv5r-3x4v-8w5c","MINI-fwv7-77xx-mjgj","MINI-fxj2-6453-cr5x","MINI-fxq6-4595-w39c","MINI-g2mw-9328-6g37","MINI-g44c-vq83-phj6","MINI-g7qp-xww8-c3x7","MINI-g7xw-c2fm-8vv7","MINI-g88h-wj9c-vpvj","MINI-g9q5-qxc8-hvw9","MINI-g9v9-xhgw-6fhh","MINI-gfwv-w5fx-hgwv","MINI-gpxg-825g-538f","MINI-gw45-7xp8-x4mp","MINI-gwh6-hcph-j939","MINI-gxmm-jfcg-v9qv","MINI-h42p-7pcj-26gm","MINI-h4xr-g24x-hjg4","MINI-h7qm-2h3q-8grj","MINI-hjg4-2m8c-9qj3","MINI-hm2p-995g-jgr9","MINI-hqg9-835h-9m9j","MINI-hqxx-6cpx-3c8p","MINI-hrmp-79j7-97x3","MINI-hv39-jhrx-4gg9","MINI-hw33-47xv-rqpp","MINI-hwvw-2jcf-m2f5","MINI-j5rx-pq8r-49w6","MINI-j5v4-992r-mchj","MINI-j7vq-vm22-vjmw","MINI-j868-2r7f-fx7q","MINI-j97j-pq6h-rwvg","MINI-j9p5-m49p-fw9w","MINI-jc4c-fv9q-wmfw","MINI-jcpc-j8m5-g65x","MINI-jfx2-r6vq-63f3","MINI-jhpw-m634-369h","MINI-jqcw-rq6w-q82w","MINI-jv8c-vqjq-cf9c","MINI-jwm2-37cx-rfmr","MINI-m28f-6j7r-jx4m","MINI-m5rj-c9xh-w6m4","MINI-mf62-vc66-2347","MINI-mf9j-9jp6-qj9w","MINI-mfwr-5fqw-9g42","MINI-mhqm-r9v2-v7fp","MINI-mjg6-7289-mqpr","MINI-mjjw-4qxh-88qw","MINI-mq76-v38x-p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key-value store","requires_auth":"none","summary":"A network attacker can exhaust etcd memory by opening many TCP connections without completing TLS handshakes, causing cluster unavailability.","user_interaction":"not_required","vuln_class":"denial_of_service"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"GitHub_M","cpe":[],"cvss":{"score":8.7,"severity":"high","source":"cna","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N","version":"4.0"},"cwes":[{"id":"CWE-770","name":"Allocation of Resources Without Limits or Throttling"}],"description":"etcd is a distributed key-value store for the data of a distributed system. Prior to versions 3.5.33, 3.6.14, and 3.7.1, a network attacker who can reach an etcd TLS listener can open many TCP connections and never send a ClientHello. In client/pkg/transport/listener_tls.go, each connection handled by tlsListener.acceptLoop spawns a goroutine that blocks indefinitely inside tls.Conn.Handshake() and remains tracked in the pending map. Unbounded goroutine and map growth can exhaust memory in the etcd process, causing loss of availability for the cluster and, when etcd backs Kubernetes, the control plane. This issue is fixed in versions 3.5.33, 3.6.14, and 3.7.1.","ecosystems":["Bitnami","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":"etcd: `tlsListener.acceptLoop` spawns unbounded handshake goroutines with no deadline","id":"CVE-2026-73500","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"Bitnami","product":null,"products":[],"type":"denial_of_service","year":"2026"},"n_packages":8,"n_references":9,"next":{"headline":"kin-openapi: ValidationHandler.Load() Fail-Open Authentication Bypass via NoopAuthenticationFunc Default","id":"CVE-2026-73501"},"packages":[{"ecosystem":"Bitnami","fixed":["3.5.33","3.6.14","3.7.1"],"introduced":["0","3.6.0","3.7.0"],"last_affected":[],"package":"etcd","purl":"pkg:bitnami/etcd","source":"BIT-etcd-2026-73500"},{"ecosystem":"Go","fixed":["3.5.33","3.6.14","3.7.1"],"introduced":["0","3.6.0","3.7.0-alpha.0"],"last_affected":[],"package":"go.etcd.io/etcd/client/pkg/v3","purl":"pkg:golang/go.etcd.io/etcd/client/pkg/v3","source":"GO-2026-6107"},{"ecosystem":"Go","fixed":["3.5.33"],"introduced":["0"],"last_affected":[],"package":"go.etcd.io/etcd/v3","purl":null,"source":"GHSA-6vch-q96h-7gc3"},{"ecosystem":"Go","fixed":["3.5.33"],"introduced":["0"],"last_affected":[],"package":"go.etcd.io/etcd/v3","purl":"pkg:golang/go.etcd.io/etcd/v3","source":"GHSA-6vch-q96h-7gc3"},{"ecosystem":"Go","fixed":["3.6.14"],"introduced":["3.6.0"],"last_affected":[],"package":"go.etcd.io/etcd/v3","purl":null,"source":"GHSA-6vch-q96h-7gc3"},{"ecosystem":"Go","fixed":["3.6.14"],"introduced":["3.6.0"],"last_affected":[],"package":"go.etcd.io/etcd/v3","purl":"pkg:golang/go.etcd.io/etcd/v3","source":"GHSA-6vch-q96h-7gc3"},{"ecosystem":"Go","fixed":["3.7.1"],"introduced":["3.7.0-alpha.0"],"last_affected":[],"package":"go.etcd.io/etcd/v3","purl":null,"source":"GHSA-6vch-q96h-7gc3"},{"ecosystem":"Go","fixed":["3.7.1"],"introduced":["3.7.0-alpha.0"],"last_affected":[],"package":"go.etcd.io/etcd/v3","purl":"pkg:golang/go.etcd.io/etcd/v3","source":"GHSA-6vch-q96h-7gc3"}],"prev":{"headline":"etcd: Watch API authorization bypass via open-ended range requests","id":"CVE-2026-73499"},"products":["etcd"],"published":"2026-08-12","related":[],"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":"Go Vulnerability Database","prefix":"GO"},{"class":"attribution","licence":"CWE Terms of Use","name":"CWE (MITRE)"},{"class":"attribution","licence":"FIRST CVSS licence","name":"CVSS (FIRST)"}],"ssvc":{"automatable":"yes","exploitation":"none","technical_impact":"partial"},"state":"PUBLISHED","updated":"2026-08-13","vendors":["etcd-io"]},"summary":"A network attacker can exhaust etcd memory by opening many TCP connections without completing TLS handshakes, causing cluster unavailability.","url":"https://insights.sbomify.com/CVE-2026-73500/"}