{"cve":"CVE-2026-39827","nvd":{"published":"2026-05-22T04:16:21.497","modified":"2026-07-23T16:10:00.137","status":"Analyzed","description":"An authenticated SSH client that repeatedly opened channels which were rejected by the server caused unbounded memory growth, eventually crashing the server process and affecting all connected users. Rejected channels are now properly removed from the connection's internal state and released for garbage collection.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","score":6.5},"cwes":["CWE-924"],"references":["https://go.dev/cl/781320","https://go.dev/issue/35127","https://groups.google.com/g/golang-announce/c/a082jnz-LvI","https://pkg.go.dev/vuln/GO-2026-5016"],"products":["golang:crypto"],"source":"nvd","synced_at":"2026-10-19T22:36:28.938604137+00:00"},"epss":{"cve":"CVE-2026-39827","score":0.00279,"percentile":0.20461,"date":"2026-10-31"},"kev":null,"osv":[{"id":"GHSA-qpw4-5x99-6vjp","url":"https://osv.dev/vulnerability/GHSA-qpw4-5x99-6vjp","summary":"golang.org/x/crypto: Invoking memory leak when rejecting channels can lead to DoS","modified":"2026-09-10T03:50:50.295705701Z","packages":[{"ecosystem":"Go","name":"golang.org/x/crypto","purl":"pkg:golang/golang.org/x/crypto","ranges":["<0.52.0"],"fixed":["0.52.0"]}]},{"id":"GO-2026-5016","url":"https://osv.dev/vulnerability/GO-2026-5016","summary":"Invoking memory leak when rejecting channels can lead to DoS in golang.org/x/crypto/ssh","modified":"2026-09-22T10:41:47.670428128Z","packages":[{"ecosystem":"Go","name":"golang.org/x/crypto","purl":"pkg:golang/golang.org/x/crypto","ranges":["<0.52.0"],"fixed":["0.52.0"]}]}],"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."]}