{"id":"CVE-2026-45783","state":"PUBLISHED","title":"libp2p: Unvalidated PUT_VALUE records allow unbounded disk exhaustion on DHT server nodes","description":"libp2p is a JavaScript Implementation of libp2p networking stack. Prior to version 16.2.6, an unauthenticated remote peer can exhaust the disk storage of any @libp2p/kad-dht node running in server mode by sending an unbounded stream of PUT_VALUE messages whose keys bypass all content validation. No credentials, no prior relationship, and no protocol deviation beyond a crafted key are required. The victim node's datastore fills until the host disk is exhausted, making the node unavailable. This issue has been patched in version 16.2.6.","publishedAt":"2026-06-10T21:09:40.499Z","updatedAt":"2026-06-11T16:14:58.869Z","severity":{"score":7.5,"label":"High","version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","source":"GitHub_M"},"assigner":"GitHub_M","products":["libp2p js-libp2p"],"affected":[{"vendor":"libp2p","product":"js-libp2p","versions":[{"version":"< 16.2.6","status":"affected"}]}],"references":["https://github.com/libp2p/js-libp2p/security/advisories/GHSA-32mq-hpph-xfvr"],"weaknesses":["CWE-20","CWE-400"],"ingestedAt":"2026-10-29T20:12:07.131Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/45xxx/CVE-2026-45783.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-45783","state":"PUBLISHED","datePublished":"2026-06-10T21:09:40.499Z","dateUpdated":"2026-06-11T16:14:58.869Z","assignerShortName":"GitHub_M","assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateReserved":"2026-05-13T07:45:21.252Z"},"containers":{"cna":{"title":"libp2p: Unvalidated PUT_VALUE records allow unbounded disk exhaustion on DHT server nodes","descriptions":[{"lang":"en","value":"libp2p is a JavaScript Implementation of libp2p networking stack. Prior to version 16.2.6, an unauthenticated remote peer can exhaust the disk storage of any @libp2p/kad-dht node running in server mode by sending an unbounded stream of PUT_VALUE messages whose keys bypass all content validation. No credentials, no prior relationship, and no protocol deviation beyond a crafted key are required. The victim node's datastore fills until the host disk is exhausted, making the node unavailable. This issue has been patched in version 16.2.6."}],"affected":[{"vendor":"libp2p","product":"js-libp2p","versions":[{"version":"< 16.2.6","status":"affected"}]}],"references":[{"url":"https://github.com/libp2p/js-libp2p/security/advisories/GHSA-32mq-hpph-xfvr","name":"https://github.com/libp2p/js-libp2p/security/advisories/GHSA-32mq-hpph-xfvr","tags":["x_refsource_CONFIRM"]}],"metrics":[{"cvssV3_1":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"HIGH","baseScore":7.5,"baseSeverity":"HIGH","confidentialityImpact":"NONE","integrityImpact":"NONE","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","version":"3.1"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-20","lang":"en","description":"CWE-20: Improper Input Validation","type":"CWE"}]},{"descriptions":[{"cweId":"CWE-400","lang":"en","description":"CWE-400: Uncontrolled Resource Consumption","type":"CWE"}]}],"providerMetadata":{"shortName":"GitHub_M","orgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateUpdated":"2026-06-10T21:09:40.499Z"},"source":{"advisory":"GHSA-32mq-hpph-xfvr","discovery":"UNKNOWN"}},"adp":[{"title":"CISA ADP Vulnrichment","references":[{"url":"https://github.com/libp2p/js-libp2p/security/advisories/GHSA-32mq-hpph-xfvr","tags":["exploit"]}],"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-06-11T13:51:51.378568Z","id":"CVE-2026-45783","options":[{"Exploitation":"poc"},{"Automatable":"no"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-06-11T16:14:58.869Z"}}]}}}