{"id":"CVE-2026-32314","summary":"Yamux remote Panic via malformed Data frame with SYN set and len = 262145","details":"Yamux is a stream multiplexer over reliable, ordered connections such as TCP/IP. Prior to 0.13.10, the Rust implementation of Yamux can panic when processing a crafted inbound Data frame that sets SYN and uses a body length greater than DEFAULT_CREDIT (e.g. 262145). On the first packet of a new inbound stream, stream state is created and a receiver is queued before oversized-body validation completes. When validation fails, the temporary stream is dropped and cleanup may call remove(...).expect(\"stream not found\"), triggering a panic in the connection state machine. This is remotely reachable over a normal Yamux session and does not require authentication. This vulnerability is fixed in 0.13.10.","aliases":["GHSA-vxx9-2994-q338"],"modified":"2026-04-10T05:42:22.922566Z","published":"2026-03-13T19:53:08.823Z","database_specific":{"cwe_ids":["CWE-248"],"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/32xxx/CVE-2026-32314.json","cna_assigner":"GitHub_M"},"references":[{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/32xxx/CVE-2026-32314.json"},{"type":"ADVISORY","url":"https://github.com/libp2p/rust-yamux/security/advisories/GHSA-vxx9-2994-q338"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-32314"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/libp2p/rust-yamux","events":[{"introduced":"0"},{"fixed":"70db05dc63e8368bd0559a5ec0dba6e5fc2bdd41"}],"database_specific":{"versions":[{"introduced":"0"},{"fixed":"0.13.10"}]}}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-32314.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V4","score":"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"}]}