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GHSA-w879-237q-wc7r

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

Source: GitHub Advisory Database (reviewed) High CVE-2026-39829

Packages

EcosystemPackageAffectedFixed in
Go golang.org/x/crypto < 0.52.0 0.52.0

Details

As written in the advisory (Markdown source, shown as plain text).

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.

References

External links from the advisory. They lead to third-party sites.