{"cve":"CVE-2026-32314","nvd":{"published":"2026-03-16T14:19:34.030","modified":"2026-06-17T10:35:32.927","status":"Analyzed","description":"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.","cvss_v4":{"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","score":8.7},"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","score":7.5},"cwes":["CWE-248"],"references":["https://github.com/libp2p/rust-yamux/security/advisories/GHSA-vxx9-2994-q338"],"products":["protocol:yamux"],"source":"nvd","synced_at":"2026-10-19T22:26:19.218427112+00:00"},"epss":{"cve":"CVE-2026-32314","score":0.00479,"percentile":0.41389,"date":"2026-11-01"},"kev":null,"osv":[{"id":"GHSA-vxx9-2994-q338","url":"https://osv.dev/vulnerability/GHSA-vxx9-2994-q338","summary":"Yamux vulnerable to remote Panic via malformed Data frame with SYN set and len = 262145","modified":"2026-03-16T22:16:17.324879Z","packages":[{"ecosystem":"crates.io","name":"yamux","purl":"pkg:cargo/yamux","ranges":["<0.13.10"],"fixed":["0.13.10"]}]}],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}