{"id":"CVE-2026-31814","summary":"Yamux remote Panic via malformed WindowUpdate credit","details":"Yamux is a stream multiplexer over reliable, ordered connections such as TCP/IP. From 0.13.0 to before 0.13.9, a specially crafted WindowUpdate can cause arithmetic overflow in send-window accounting, which triggers a panic in the connection state machine. This is remotely reachable over a normal network connection and does not require authentication. This vulnerability is fixed in 0.13.9.","aliases":["GHSA-4w32-2493-32g7"],"modified":"2026-04-10T05:42:09.089537Z","published":"2026-03-13T19:19:41.879Z","database_specific":{"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/31xxx/CVE-2026-31814.json","cna_assigner":"GitHub_M","cwe_ids":["CWE-190"]},"references":[{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/31xxx/CVE-2026-31814.json"},{"type":"ADVISORY","url":"https://github.com/libp2p/rust-yamux/security/advisories/GHSA-4w32-2493-32g7"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-31814"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/libp2p/rust-yamux","events":[{"introduced":"68a9e3d07947a4f261dd38463fc71dfb86f6f60e"},{"fixed":"f16949b84e24e17a08d7f234741c1f30b3b3e906"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-31814.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"}]}