CVE-2026-39829

HIGH EPSS 22.0%
Published May 22, 20261mo ago · Modified Jun 17, 20261w ago
7.5 CVSS 3.1
High
Find Similar
Published May 22, 2026 1mo ago
Last Modified Jun 17, 2026 1w ago

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.

CVSS Details

Base Score
7.5
Exploitability
3.9
Impact
3.6
Vector string
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Attack Vector Network
Attack Complexity Low
Privileges Required None
User Interaction None
Scope Unchanged
Confidentiality None
Integrity None
Availability High

Threat Intelligence

EPSS Exploit Probability
22.0% percentile
Exploit & Patch Status
No Known Exploit
No Patch Available

Weaknesses 1

CWE-347

Affected Products 1

VendorProductVersionRange
golangcrypto* <0.52.0

References 5

  • go.dev https://go.dev/cl/781641
    Issue Tracking
  • go.dev https://go.dev/cl/781661
    Issue Tracking
  • go.dev https://go.dev/issue/79565
    Issue Tracking
  • groups.google.com https://groups.google.com/g/golang-announce/c/a082jnz-LvI
    Mailing List
  • pkg.go.dev https://pkg.go.dev/vuln/GO-2026-5018
    Vendor Advisory

Remediation

No remediation data recorded yet

Check vendor advisories and the NVD entry for patch availability.