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This CVE record has been updated after NVD enrichment efforts were completed. Enrichment data supplied by the NVD may require amendment due to these changes.
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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OR
*cpe:2.3:a:golang:crypto:*:*:*:*:*:go:*:* versions up to (excluding) 0.52.0
Added
Reference Type
Go Project: https://go.dev/cl/781641 Types: Issue Tracking
Added
Reference Type
Go Project: https://go.dev/cl/781661 Types: Issue Tracking
Added
Reference Type
Go Project: https://go.dev/issue/79565 Types: Issue Tracking
Added
Reference Type
Go Project: https://groups.google.com/g/golang-announce/c/a082jnz-LvI Types: Mailing List
Added
Reference Type
Go Project: https://pkg.go.dev/vuln/GO-2026-5018 Types: Vendor Advisory
CVE Modified by CISA-ADP5/22/2026 3:17:02 PM
Action
Type
Old Value
New Value
Added
CVSS V3.1
AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
New CVE Received from Go Project5/22/2026 12:16:22 AM
Action
Type
Old Value
New Value
Added
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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