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High severity7.5NVD Advisory· Published May 22, 2026· Updated Aug 20, 2026

CVE-2026-39829

CVE-2026-39829

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.

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Affected packages

Versions sourced from the GitHub Security Advisory.

PackageAffected versionsPatched versions
golang.org/x/cryptoGo
< 0.52.00.52.0

Affected products

2791

Patches

Vulnerability mechanics

References

65

News mentions

0

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