CVE-2026-39827An 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.
Updated under an hour ago ()
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It affects golang crypto. Add what you run to find out whether that includes you.
No exploitation reported and no EPSS estimate yet.
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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
- 6.5 MEDIUM (v3.1, NVD)CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
- Weakness (CWE)
- CWE-924
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- Not given
- NVD analysis
- Analyzed
- Record last updated
- Jul 23, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
golang crypto golang:crypto | before 0.52.0 | NVD |
References
- https://go.dev/cl/781320issue-tracking
- https://go.dev/issue/35127issue-tracking
- https://groups.google.com/g/golang-announce/c/a082jnz-LvImailing-list
- https://pkg.go.dev/vuln/GO-2026-5016vendor-advisory
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.