Vulnerabilities CVE-2026-39829

CVE-2026-39829

None

Open

TLP:CLEAR

Invoking pathological RSA/DSA parameters may cause DoS in golang.org/x/crypto/ssh

NVD CVE.org

Critical Infrastructure

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Description

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.

Details

EPSS Score ⓘ: 0.47%

38.1th percentile
Confidence: 90%
Published: May 22, 2026
Last Modified: Aug 11, 2026

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