CVE-2026-43527

Description

OpenClaw before 2026.4.14 contains a server-side request forgery vulnerability in browser SSRF policy that allows private-network navigation by default. Attackers can exploit this misconfiguration to access internal services or metadata endpoints through browser-driven requests.

Overview

State: PUBLISHED
Assigner (CNA): VulnCheck
CVSS severity: MEDIUM
CVSS score: 6.3 / 10
CVSS vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:N/SC:H/SI:N/SA:N
Effective score: 6.3 / 10 MEDIUM source: CNA overview
CWE(s): CWE-918, CWE-1188
Reserved: 2026-05-01
Published: 2026-05-05 13:24 UTC
Last updated: 2026-05-06 14:40 UTC
Source: https://raw.githubusercontent.com/CVEProject/cvelistV5/main/cves/2026/43xxx/CVE-2026-43527.json
Linked Threat: CVE-2026-43527 — CVE-2026-43527

NVD triage scoring NVD CVE 2.0

Layer NVD adds on top of the CNA's CVE record — published / last-modified timestamps, exploitability / impact subscores, and the FIRST.org EPSS probability that this CVE will be exploited in the wild in the next 30 days.

NVD published: 2026-05-05 12:16:18 UTC
NVD last modified: 2026-05-07 13:29:50 UTC
NVD CVSS v3.1: 7.7 / 10 HIGH source: disclosure@vulncheck.com
NVD CVSS vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N
Exploitability subscore: 3.1 / 10
Impact subscore: 4.0 / 10
EPSS score: 0.0003 (probability of exploitation in next 30 days)
EPSS percentile: 10.36% vs all CVEs — higher = more likely to be exploited, as of 2026-05-24

European Union Vulnerability Database ENISA EUVD

ENISA's official EU repository for curated vulnerability intelligence. Carries a separate identifier (EUVD-YYYY-NNNN) and frequently exposes an earlier-published description + CVSS than NVD does.

EUVD ID: EUVD-2026-27265
Assigner: VulnCheck
Published: May 5, 2026, 11:24:58 AM
Updated: May 6, 2026, 12:40:20 PM
EUVD base score (CVSS 4.0): 6.3 / 10
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:N/SC:H/SI:N/SA:N
EUVD-reported EPSS: 0.0300
Vendors: OpenClaw
Products: OpenClaw

OpenClaw (0 <2026.4.14)

ENISA description: OpenClaw before 2026.4.14 contains a server-side request forgery vulnerability in browser SSRF policy that allows private-network navigation by default. Attackers can exploit this misconfiguration to access internal services or metadata endpoints through browser-driven requests.

EUVD references (6)

Affected products (1)

Vendor	Product	Versions	Platforms
OpenClaw	OpenClaw	`0` (affected), `2026.4.14` (unaffected)	—

Affected products — CPE 2.3 (1) NVD

NVD's normalized CPE 2.3 matchers, used by vendor tools (vulnerability scanners, asset managers) for automated detection. Compare with the CNA's free-text "Affected products" section above.

cpe:2.3:a:openclaw:openclaw:*:*:*:*:*:node.js:*:*

Vendor references (6)

References embedded in the original CVE record by the assigning CNA.

GitHub Security Advisory (GHSA-53vx-pmqw-863c) vendor-advisory
Patch Commit (1) patch
Patch Commit (2) patch
Patch Commit (3) patch
Patch Commit (4) patch
VulnCheck Advisory: OpenClaw < 2026.4.14 - Server-Side Request Forgery via Private Network Navigation third-party-advisory

MITRE references (6) cveawg.mitre.org

Pulled from MITRE's CVE Services API by the 🛰 Backfill from MITRE button.

Patch Commit (4) patch
GitHub Security Advisory (GHSA-53vx-pmqw-863c) vendor-advisory
Patch Commit (1) patch
VulnCheck Advisory: OpenClaw < 2026.4.14 - Server-Side Request Forgery via Private Network Navigation third-party-advisory
Patch Commit (2) patch
Patch Commit (3) patch

Web references (3)

DuckDuckGo results ranked by threat-intel / vendor advisory domains. Generated by the 🔎 Find references (web) button above — same flow as the Remediations search.

https://www.cve.org/CVERecord?id=CVE-2026-43527 tenable:www.cve.org
https://www.first.org/epss/ tenable:www.first.org
https://nvd.nist.gov/vuln/detail/CVE-2026-43527 tenable:nvd.nist.gov

NVD-tagged references (6)

Reference list NVD curates from the CNA record, vendor advisories, and third-party reports. The tag chips below are NVD's analyst-assigned categories.

https://github.com/openclaw/openclaw/commit/024f4614a1a1831406e763adc40ef226e3d5e9ed disclosure@vulncheck.com Patch
https://github.com/openclaw/openclaw/commit/1dabfef28db523e7de81edeb3dd689e9171236a2 disclosure@vulncheck.com Patch
https://github.com/openclaw/openclaw/commit/213c36cf51121ef6c05cfccd78037371f968f31a disclosure@vulncheck.com Patch
https://github.com/openclaw/openclaw/commit/7eecfa411df3d12e6b810e6ca5df47254fc3db3f disclosure@vulncheck.com Patch
https://github.com/openclaw/openclaw/security/advisories/GHSA-53vx-pmqw-863c disclosure@vulncheck.com Vendor Advisory
https://www.vulncheck.com/advisories/openclaw-server-side-request-forgery-via-private-network-navigation disclosure@vulncheck.com Third Party Advisory

Remediations (16)

Remediations are stored against the linked Threat row; the list below is deduplicated across both pages.

Microsoft and Adobe Patch Tuesday, April 2026 Security Update Review

web:blog.qualys.com

With Qualys Policy Audit's out-of-the-box mitigation or Compensatory Controls, which reduce the risk of a vulnerability being exploited because the remediation ( fix / patch ) cannot be done immediately, these security controls are not recommended by any industry standards, such as CIS and DISA-STIG.

2026-05-23 21:14 UTC
Microsoft Patch Tuesday March 2026 - 78 Vulnerabilities Fixed ...

web:cybersecuritynews.com

Microsoft released its March 2026 Patch Tuesday security update on March 10, 2026 , addressing 78 vulnerabilities across Windows, Microsoft Office, Azure, SQL Server, and .NET. The update includes one actively exploited zero-day vulnerability and multiple Critical-rated flaws demanding immediate attention from security teams. The most urgent fix this month is CVE - 2026 -21262, the sole zero-day ...

2026-05-23 21:14 UTC
Patch Tuesday, May 2026 Edition - Krebs on Security

web:krebsonsecurity.com

Microsoft expects that exploitation is more likely. May's Patch Tuesday is a welcome respite from April, which saw Microsoft fix a near-record 167 security flaws.

2026-05-23 21:14 UTC
Oracle CPU April 2026: Delayed RUs & First Analysis

web:oradba.ch

19c 26ai cve oracle-cpu patch -management release-update security Oracle CPU April 2026 : Delayed RUs & First Analysis On April 21, 2026 , Oracle released the Critical Patch Update (CPU) for April 2026 — 481 new security fixes across the entire Oracle product stack. For Oracle Database, this means another round of mandatory patching.

2026-05-23 21:14 UTC
Security Update Guide - Microsoft

web:portal.msrc.microsoft.com

The Security Update Guide provides information on the latest Microsoft security updates, helping users understand and address potential vulnerabilities effectively.

2026-05-23 21:14 UTC
Landing Page | ServiceNow Common Vulnerabilities & Exposures (CVE ...

web:support.servicenow.com

Overview The advisories below document publicly disclosed Common Vulnerabilities and Exposures ( CVEs ) in the Now Platform by ServiceNow. Because ServiceNow uses various methods to communicate vulnerability information, patches, and other fixes, customers should review family, security patch , and hotfix release notes, which are available at https://docs.servicenow.com, for a complete list of ...

2026-05-23 21:14 UTC
April 2026 Patch Tuesday: Updates and Analysis | CrowdStrike

web:www.crowdstrike.com

Microsoft's April 2026 Patch Tuesday addresses 164 CVEs , featuring 8 Critical vulnerabilities, one exploited zero-day, and one disclosed zero-day.

2026-05-23 21:14 UTC
Oracle Critical Patch Update Advisory - April 2026

web:www.oracle.com

This Critical Patch Update contains 481 new security patches across the product families listed below. Please note that an MOS note summarizing the content of this Critical Patch Update and other Oracle Software Security Assurance activities is located at April 2026 Critical Patch Update: Executive Summary and Analysis.

2026-05-23 21:14 UTC
April 2026 Third-Party Vulnerabilities and Patches | Recast

web:www.recastsoftware.com

This April was the most active month observed so far in terms of third‑party vulnerability disclosures and remediation activity. During the month, 360 unique vulnerabilities were identified across 96 applications, with vendors releasing 172 patched versions to address these issues. Compared to earlier months, April represents a clear peak in both vulnerability volume and patch output ...

2026-05-23 21:14 UTC
Patch Tuesday May 2026: Security Updates & CVE Analysis

web:zecurit.com

Get the complete breakdown of Microsoft's May 2026 Patch Tuesday. We analyze the latest security updates and all critical CVEs .

2026-05-23 21:14 UTC
Oracle Critical Patch Update, April 2026 Security Update Review

web:blog.qualys.com

Oracle released its second quarterly edition of this year's Critical Patch Update. The update received patches for 481 security vulnerabilities.

2026-05-26 02:46 UTC
Security Advisory Bulletin 064 | Ubiquiti Community

web:community.ui.com

Published: May 21, 2026 Updated: May 22, 2026 Version: 1.1 Revision: 1.1 Summary 1 of 5 A malicious actor with access to the network and high privileges could exploit an Improper Input Validation vulnerability found in UniFi OS devices to execute a Command Injection. Affected Products: UniFi OS Server (Version 5.0.6 and earlier) Mitigation : Update your UniFi OS Server to Version 5.0.8 or later ...

2026-05-26 02:46 UTC
Security Update Guide - Microsoft

web:msrc.microsoft.com

The Microsoft Security Response Center (MSRC) investigates all reports of security vulnerabilities affecting Microsoft products and services, and provides the information here as part of the ongoing effort to help you manage security risks and help keep your systems protected.

2026-05-26 02:46 UTC
Nvd - Cve-2026-43512

web:nvd.nist.gov

Official websites use .gov A .gov website belongs to an official government organization in the United States.

2026-05-26 02:46 UTC
Microsoft April 2026 Patch Tuesday fixes 167 flaws, 2 zero-days

web:www.bleepingcomputer.com

Today is Microsoft's April 2026 Patch Tuesday with security updates for 167 flaws, including 2 zero-day vulnerabilities.

2026-05-26 02:46 UTC
Oracle Patches 450 Vulnerabilities With April 2026 CPU

web:www.securityweek.com

Oracle on Tuesday announced the release of 481 new security patches as part of its April 2026 Critical Patch Update (CPU). Across the 28 product families that received security updates, more than 300 patches address vulnerabilities that are remotely exploitable without authentication.

2026-05-26 02:46 UTC

AI Forensic Analysis

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Raw JSON

The full cvelistV5 record. Download as CVE-2026-43527.json.

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