CVE•Published 2026-06-12•Modified 2026-07-23•0 articles on news•4 live references•NVD data

CVE-2026-53839Openclaw · Openclaw

Vulnerability data via NVD (ingested)

CVSS v3.1

6.5

MEDIUM

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

EPSS percentile

Exploit Prediction Scoring System · top 82% of all CVEs

Weaknesses (CWE)

CWE-1023Incomplete Comparison with Missing Factors

Description

OpenClaw before 2026.5.7 contains a hostname validation vulnerability in retry endpoint checks that allows matching hostname prefixes instead of exact hostnames. Attackers can exploit this by crafting a hostname prefix resembling a trusted host to send authentication material to untrusted endpoints.

Timeline

Published 2026-06-12

Modified 2026-07-23

External references

NVD MITRE Exploit-DB 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-2026-53839

Hosts Shodan has explicitly fingerprinted as vulnerable.

Shodan · product

product:"Openclaw Openclaw"

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

Shodan · banner/body mention

http.html:"Openclaw"

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

More intel sources (5)

Shodan report

vuln:CVE-2026-53839