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Openclaw CVE-2026-41297

MEDIUM
Server-Side Request Forgery (SSRF) (CWE-918)
2026-04-21 disclosure@vulncheck.com
4.8
CVSS 4.0 · NVD
View

Attack ChainAIDerived

Hypothetical attack flow derived from CVE metadata – not a confirmed exploit chain

  1. Access
    Attacker obtains valid OpenClaw credentials
  2. Delivery
    Accesses marketplace plugin download interface
  3. Exploit
    Crafts plugin request with redirect-enabled URL
  4. Execution
    Server processes download and follows unvalidated HTTP redirect
  5. Persist
    Internal resource endpoint returns sensitive data or configuration
  6. Impact
    Attacker exfiltrates or modifies internal state

Vulnerability Assessment

Weakness
CWE
OWASP Top 10:2025
A01:2025 - Broken Access Control
ASVS 5.0
V4 - API and Web Service URL allowlisting, SSRF prevention
MITRE ATT&CK

2 techniques across 2 tactics: Initial Access, Credential Access

The technique list with ATT&CK links and the kill-chain view is part of the Basic plan and up.

Exploitation Conditions

Authentication is required (PR:L in CVSS vector) - the attacker must have a valid OpenClaw user account with marketplace plugin access permissions. User interaction is required (UI:P) - the attacker must either trick a user into initiating a plugin download or exploit an automated marketplace update mechanism. The marketplace plugin feature must be enabled and accessible in the target OpenClaw instance (non-default but commonly deployed feature). The vulnerability is triggered specifically during the archive download phase of the marketplace plugin workflow when HTTP redirects are encountered. Attack complexity is low (AC:L), meaning once authentication and user interaction are satisfied, exploitation is straightforward. Attack timing complexity (AT:P) suggests the attack window or timing may be constrained, possibly due to race conditions or time-sensitive operations in the marketplace module. Limitations: unauthenticated remote users cannot exploit this directly; internal firewall rules blocking outbound connections from the OpenClaw server to internal networks would prevent successful exploitation; and SSRF impact depends entirely on what internal services are reachable from the OpenClaw application server and whether those services accept requests without additional authentication.

Impact

The CVSS 4.8 (medium) score reflects several limiting factors: the attack requires prior authentication (PR:L), user interaction (UI:P), and contains attack timing complexity (AT:P). However, the CVSS vector indicates integrity impact (VI:L) and scope elevation (SC:H), suggesting the attacker can influence internal resource integrity or move laterally. EPSS and exploitation probability data are not provided, so real-world prevalence cannot be assessed. No CISA KEV listing is indicated, and no public exploit code is referenced in the provided data, suggesting this is not currently under active exploitation at scale. The risk assessment is nuanced: while the technical impact is moderate (integrity, not confidentiality of sensitive data), the requirement for authenticated access significantly reduces threat surface compared to unauthenticated SSRF vulnerabilities. However, in organizations where many users hold marketplace plugin access, the cumulative risk increases. Internal network architecture matters critically-if internal services lack network segmentation and accept requests from the OpenClaw application server, impact could escalate to data exfiltration or lateral movement. Defenders should assess whether OpenClaw instances have access to sensitive internal endpoints (e.g., Kubernetes API servers, cloud metadata, configuration management systems) to determine if this is a priority remediation.

Exploit ScenarioDerived

An authenticated OpenClaw user with marketplace plugin access crafts a plugin download request. The attacker specifies a redirect URL pointing to an internal service, such as a cloud metadata endpoint (http://169.254.169.254/latest/meta-data/) or internal configuration API. When the OpenClaw server processes the download and encounters the HTTP 302 redirect response, it automatically follows the redirect without validating the destination hostname. The server then fetches the internal resource, and the attacker can either exfiltrate the response or use the SSRF to probe internal network topology. If user interaction (clicking a download link) is required, the attacker must socially engineer a legitimate user, but if the marketplace plugin has an automated update mechanism, exploitation could occur without direct user action.

This Month Plan within 30 days. Why: MEDIUM severity (CVSS 4.0-6.9).
Patch available 0.0% exploitation probability (EPSS)

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AnalysisAIv1 – Apr 21, 2026

OpenClaw before version 2026.3.31 allows authenticated users to exploit server-side request forgery (SSRF) through unvalidated HTTP redirects in the marketplace plugin download functionality, enabling access to internal resources and potential information disclosure. The marketplace.ts module fails to validate redirect destinations during archive downloads, permitting remote attackers with valid credentials and user interaction to redirect requests to arbitrary internal or external servers. Real-world exploitation is limited by authentication and interaction requirements, keeping the baseline CVSS at 4.8 (medium), though impact depends on network exposure of internal services.

RemediationAI

Upgrade OpenClaw to version 2026.3.31 or later, which includes the fix referenced in GitHub commit 2ce44ca6a1302b166a128abbd78f72114f2f4f52. This patch adds validation to redirect destinations in the marketplace.ts module, restricting downloads to whitelisted or validated hostnames. For organizations unable to immediately patch, implement these compensating controls: (1) restrict network access from the OpenClaw application server to internal resources by implementing egress filtering rules that block outbound connections to private IP ranges (10.0.0.0/8, 172.16.0.0/12, 192.168.0.0/16) and link-local addresses (169.254.0.0/16)-this prevents SSRF to internal systems but may break legitimate integrations with internal artifact repositories; (2) disable or restrict the marketplace plugin feature if not actively used, removing the attack surface entirely; (3) require users to authenticate with additional factors (IP whitelist, VPN) to access marketplace functionality. Consult the official GitHub Security Advisory (GHSA-vjx8-8p7h-82gr) and VulnCheck advisory for detailed patch guidance and any additional mitigations specific to your deployment.

Affected Packages

npm openclaw fix: 2026.3.31

Source: OSV (Open Source Vulnerabilities)

Affects your stack

Affects 1 package in npm

Checking this CVE against your own stacks and servers is part of the Basic plan and up.

Technical ContextAI · show details

The vulnerability exists in OpenClaw's marketplace.ts module, which handles plugin archive downloads. The root cause is CWE-918 (Server-Side Request Forgery), a class where an application fetches remote resources without validating the destination URL. In this case, the download functionality fails to validate or restrict HTTP redirect destinations (3xx responses), allowing attackers to chain legitimate requests to redirect to attacker-controlled or internal endpoints. The attacker can manipulate the download request to cause the server to fetch content from internal resources (e.g., metadata endpoints, administrative interfaces, or cloud instance metadata services like AWS IMDSv1) that would normally be access-restricted. This differs from typical SSRF attacks because the trigger is an HTTP redirect chain rather than direct URL manipulation, making it a redirect-based SSRF variant often harder to detect in security reviews.

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Severity by source

NVD PRIMARY 4.8 MEDIUM
CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:P/VC:N/VI:L/VA:N/SC:H/SI:L/SA:N

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

Attack Vector
Network
Attack Complexity
Low
Attack Requirements
Present
Privileges Required
Low
User Interaction
Passive
Vulnerable system: Confidentiality
None
Vulnerable system: Integrity
Low
Vulnerable system: Availability
None
Subsequent system: Confidentiality
High
Subsequent system: Integrity
Low
Subsequent system: Availability
None

Lifecycle Timeline

2
Patch released
Apr 21, 2026 - 02:30 nvd
Patch available
CVE Published
Apr 21, 2026 - 00:16 nvd
MEDIUM 4.8

DescriptionCVE.org

OpenClaw before 2026.3.31 contains a server-side request forgery vulnerability in the marketplace plugin download functionality that allows attackers to access internal resources by following unvalidated redirects. The marketplace.ts module fails to restrict redirect destinations during archive downloads, enabling remote attackers to redirect requests to arbitrary internal or external servers.

Blast Radius

ecosystem impact
† from your stack dependencies † transitive graph · vuln.today resolves 4-path depth
  • 1 npm packages depend on openclaw (1 direct, 0 indirect)

Ecosystem-wide dependent count for version 2026.3.31.

Threat Intelligence Overview

EPSS Score
0.0%
Top 89% exploitable
Social Media
1
Sightings
Data Quality
7 sources
Confidence: High
NVD CVE.org EPSS Vulnrichment CIRCL GitHub VulDB

How this decision was reached

The engine reads each signal below and applies a fixed list of rules from top to bottom. The first rule that matches sets the recommended action – like a statement, every line is shown.

SignalValue
Severity MEDIUM
CISA KEV No
Public POC No
EPSS 0.0%
Patch available Yes
Active threat No
Deciding rule
MEDIUM severity (CVSS 4.0-6.9)
What every action level means
Emergency Immediate action required. Criteria: CRITICAL + in CISA KEV (actively exploited) without patch, OR CRITICAL + EPSS > 30% without patch, OR CRITICAL + active threat signals without patch.
Act Now Prioritize within 24-48h. Criteria: in KEV with patch available, OR CRITICAL + public POC, OR HIGH + EPSS > 10%, OR CRITICAL + active threat, OR any CRITICAL severity.
This Week Schedule remediation this week. Criteria: HIGH severity (CVSS 7.0-8.9). Patch within normal change window.
This Month Plan within 30 days. Criteria: MEDIUM severity (CVSS 4.0-6.9), lower exploitation probability. Include in regular patch cycle.
Monitor Track and reassess. Criteria: LOW severity (CVSS 0.1-3.9), minimal exploitation risk. No immediate action needed.

SSVC AssessmentENISA

SSVC Decision· derived
Scheduled
Exploitation
None
System Exposure· derived
Open
Automatable
No
Human Impact· derived
Medium
Technical Impact
Partial

Priority Score

24
Low Medium High Critical
KEV: 0
EPSS: 0
CVSS: +24
PoC: 0
Weaponized: 0
Threat intel: 0
Gov advisory: 0

Attack Technique

Server-Side Request Forgery exploits applications that fetch remote resources based on user-supplied URLs.

Affected Products (CPE)CVE.org

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