Answer in brief
CVE-2026-39829 records a High severity (CVSS 7.5) vulnerability in Invoking pathological RSA/DSA parameters may cause 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/golang.org/x/crypto/ssh (generic), 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.
Answer in brief
CVE-2026-39829 records a High severity (CVSS 7.5) vulnerability in Invoking pathological RSA/DSA parameters may cause 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/golang.org/x/crypto/ssh (generic), 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.
CVSS is 7.5. 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/golang.org/x/crypto/ssh (generic), golang.org/x/crypto (go), golang.org/x/crypto/ssh (go). Check affected ranges and fixed versions before updating.
| Product | Affected versions | Fixed versions |
|---|---|---|
| cpe:2.3:a:golang:crypto:*:*:*:*:*:go:*:* | Not reported | Not reported |
| Package | Affected range | Fixed version |
|---|---|---|
| golang.org/x/crypto/golang.org/x/crypto/sshgeneric | >=0 <0.52.0 | 0.52.0 |
| golang.org/x/cryptogo | <0.52.0 | 0.52.0 |
| golang.org/x/crypto/sshgo | <0.52.0 | 0.52.0 |
Published upstream
May 22, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Aug 7, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Jun 25, 2026
The RSA and DSA public key parsers did not enforce size limits on key parameters. A crafted public key with an excessively large modulus or DSA parameter could cause several minutes of CPU consumption during signature verification. This could be triggered by unauthenticated clients during public key authentication. RSA moduli are now limited to 8192 bits, and DSA parameters are validated per FIPS 186-2.
Quoted source text, attributed separately from HOL analysis.
CVSS is 7.5. 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/golang.org/x/crypto/ssh (generic), golang.org/x/crypto (go), golang.org/x/crypto/ssh (go). Check affected ranges and fixed versions before updating.
| Product | Affected versions | Fixed versions |
|---|---|---|
| cpe:2.3:a:golang:crypto:*:*:*:*:*:go:*:* | Not reported | Not reported |
| Package | Affected range | Fixed version |
|---|---|---|
| golang.org/x/crypto/golang.org/x/crypto/sshgeneric | >=0 <0.52.0 | 0.52.0 |
| golang.org/x/cryptogo | <0.52.0 | 0.52.0 |
| golang.org/x/crypto/sshgo | <0.52.0 | 0.52.0 |
Published upstream
May 22, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Aug 7, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Jun 25, 2026
The RSA and DSA public key parsers did not enforce size limits on key parameters. A crafted public key with an excessively large modulus or DSA parameter could cause several minutes of CPU consumption during signature verification. This could be triggered by unauthenticated clients during public key authentication. RSA moduli are now limited to 8192 bits, and DSA parameters are validated per FIPS 186-2.
Quoted source text, attributed separately from HOL analysis.