CVE•Published 2026-05-22•Modified 2026-05-28•1 article on news•6 live references•NVD data
CVE-2026-39832Golang · Crypto
Vulnerability data via NVD (ingested)
CVSS v3.1
9.1
CRITICAL
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
EPSS percentile
—
Weaknesses (CWE)
Description
When adding a key to a remote agent constraint extensions such as restrict-destination-v00@openssh.com were not serialized in the request. Destination restrictions were silently stripped when forwarding keys, allowing unrestricted use of the key on the remote host. The client now serializes all constraint extensions. Additionally, the in-memory keyring returned by NewKeyring() now rejects keys with unsupported constraint extensions instead of silently ignoring them.
Timeline
Published 2026-05-22
Modified 2026-05-28
External references
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-2026-39832Hosts 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-2026-39832Country / ASN / product breakdown for the vuln query.
Censys
vulnerabilities.cve_id: CVE-2026-39832Censys host search filtered to this CVE id.
grep.app
CVE-2026-39832Public source-code mentions — fast PoC discovery.
GitHub code
CVE-2026-39832GitHub code search for direct mentions.
Google dork
"CVE-2026-39832" exploit -site:nvd.nist.govWrite-ups and news, NVD excluded.
Known PoCs on GitHub
No public proof-of-concept repositories found for CVE-2026-39832 on GitHub.