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.
Update golang.org/x/crypto to 0.52.0; golang.org/x/crypto/ssh to 0.52.0 if you use the affected versions. Test the change in a non-production environment first.
Local check
hol-guard supply-chain scangolang.org/x/crypto/ssh: Invoking pathological RSA/DSA parameters may cause DoS affects golang.org/x/crypto (go), golang.org/x/crypto/ssh (go). Severity is high. 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.
AI coding agents often install or upgrade packages automatically in go. A high vulnerability in a dependency can be pulled into a project through a normal install or update without a human reviewing the change, expanding the blast radius from a single package to every agent workspace that depends on it.
| Package | Affected range | Fixed version |
|---|---|---|
| golang.org/x/cryptogo | <0.52.0 |
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.
Update golang.org/x/crypto to 0.52.0; golang.org/x/crypto/ssh to 0.52.0 if you use the affected versions. Test the change in a non-production environment first.
Local check
hol-guard supply-chain scangolang.org/x/crypto/ssh: Invoking pathological RSA/DSA parameters may cause DoS affects golang.org/x/crypto (go), golang.org/x/crypto/ssh (go). Severity is high. 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.
AI coding agents often install or upgrade packages automatically in go. A high vulnerability in a dependency can be pulled into a project through a normal install or update without a human reviewing the change, expanding the blast radius from a single package to every agent workspace that depends on it.
| Package | Affected range | Fixed version |
|---|---|---|
| golang.org/x/cryptogo | <0.52.0 |
| 0.52.0 |
| golang.org/x/crypto/sshgo | <0.52.0 | 0.52.0 |
|---|
Fixed versions are reported by the source feed; confirm compatibility before updating.
Reported by GitHub Security Advisories (ghsa).
HOL Guard can help your team review package activity against supported protection paths.
Explore HOL Guard| 0.52.0 |
| golang.org/x/crypto/sshgo | <0.52.0 | 0.52.0 |
|---|
Fixed versions are reported by the source feed; confirm compatibility before updating.
Reported by GitHub Security Advisories (ghsa).
HOL Guard can help your team review package activity against supported protection paths.
Explore HOL Guard