CVE•Published 2026-05-22•Modified 2026-06-02•0 articles on news•5 live references•NVD data

CVE-2026-39829Golang · Crypto

Vulnerability data via NVD (ingested)

CVSS v3.1

7.5

HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

EPSS percentile

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Weaknesses (CWE)

CWE-347Improper Verification of Cryptographic Signature

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.

Timeline

Published 2026-05-22

Modified 2026-06-02

External references

NVD MITRE Exploit-DB Sploitus VulnCheck

Search for exposed instances

Shodan + Censys queries derived from NVD's CPE data. The vuln tag catches assets Shodan has explicitly linked to this CVE; the product / banner fingerprints find exposed instances even when the vuln tag was never applied (which is common).

Shodan · vuln tag0 hosts

vuln:CVE-2026-39829

Hosts Shodan has explicitly fingerprinted as vulnerable.

Shodan · product

product:"Golang Crypto"

All exposed Golang Crypto instances — cross-reference with the CVE's affected-version range.

Shodan · banner/body mention

http.html:"Crypto"

HTTP body or banner mentions "Crypto" — catches deploys Shodan didn't identify as a product.

More intel sources (5)

Shodan report

vuln:CVE-2026-39829