Answer in brief
CVE-2026-39827 records a Medium severity vulnerability in Invoking memory leak when rejecting channels can lead to DoS in golang.org/x/crypto/ssh. The current sources do not mark it as known exploited. The current feed maps golang.org/x/crypto (go), golang.org/x/crypto (go), golang.org/x/crypto/ssh (go). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
A CVSS score is not reported in the current record. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps golang.org/x/crypto (go), golang.org/x/crypto (go), golang.org/x/crypto/ssh (go). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| golang.org/x/cryptogo | <0.52.0 | 0.52.0 |
| golang.org/x/cryptogo | >=0 <0.52.0 | 0.52.0 |
| golang.org/x/crypto/sshgo | <0.52.0 | 0.52.0 |
Published upstream
May 22, 2026
Evidence: source:osv:source_dates:source-dates:recordSource modified
Sep 22, 2026
Evidence: source:osv:source_dates:source-dates:recordFirst seen by HOL
Jun 25, 2026
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.
Quoted source text, attributed separately from HOL analysis.