Raw vector
CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:H/VI:L/VA:L/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:XSummary
CVE-2026-22181 is a medium-severity SSRF (CWE-918) vulnerability in Openclaw Openclaw. Its CVSS base score is 6.1 (Medium).
Operationally, exploitation aligns with the MITRE ATT&CK technique Exploit Public-Facing Application (T1190); ranked at the 13th percentile by exploit likelihood (below the median); it is not currently listed in the CISA KEV catalog; a public proof-of-concept is referenced.
The strongest mitigations our analysis identified map to AC-4 (Information Flow Enforcement) and SI-10 (Information Input Validation) — see the control section below for these in your framework.
Deeper analysis AI-assisted summary
Synthesised by an AI model from the NVD description and linked references — a reading aid, not an authoritative source.
CVE-2026-22181, published on 2026-03-18, is a DNS pinning bypass vulnerability classified under CWE-918 (Server-Side Request Forgery) that affects OpenClaw versions prior to 2026.3.2. The issue resides in strict URL fetch paths, where the presence of environment proxy variables such as HTTP_PROXY, HTTPS_PROXY, or ALL_PROXY enables attackers to circumvent SSRF guards. Instead of adhering to pinned-destination routing, attacker-influenced URLs are routed through proxy behavior, allowing access to internal targets reachable from the proxy environment.
With a CVSS v3.1 base score of 7.6 (AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:L), the vulnerability can be exploited by low-privileged users over the network with low attack complexity and no user interaction. Exploitation bypasses SSRF protections to reach internal resources via the proxy, resulting in high confidentiality impact—such as unauthorized data access—along with low integrity and availability effects.
Advisories recommend updating to OpenClaw version 2026.3.2 or later to mitigate the issue. Relevant details are provided in the patching commit at https://github.com/openclaw/openclaw/commit/345abf0b2e0f43b0f229e96f252ebf56f1e5549e, the GitHub security advisory at https://github.com/openclaw/openclaw/security/advisories/GHSA-8mvx-p2r9-r375, and the VulnCheck advisory at https://www.vulncheck.com/advisories/openclaw-dns-pinning-bypass-via-environment-proxy-configuration-in-web-fetch.
OWASP Top 10 for Web (2025)
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2026-12728
Vulnerability Data
OpenClaw versions prior to 2026.3.2 contain a DNS pinning bypass vulnerability in strict URL fetch paths that allows attackers to circumvent SSRF guards when environment proxy variables are configured. When HTTP_PROXY, HTTPS_PROXY, or ALL_PROXY environment variables are present, attacker-influenced URLs…
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can be routed through proxy behavior instead of pinned-destination routing, enabling access to internal targets reachable from the proxy environment.
- CWE(s)
Related Threats
MITRE ATT&CK Enterprise Techniques
CVEs Like This One
Affected Assets
Mitigating Controls
Control response
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V1.3.6V1.5.3V5.3.2V10.4.7
Mitigating Controls (NIST 800-53 r5) AI
Information flow enforcement can restrict which destinations the server is allowed to contact on behalf of users.
Input validation directly stops untrusted URLs from being accepted and fetched without destination checks.
Boundary protection limits the network reach of server-initiated requests even if SSRF occurs.
Mitigating Controls (NIST CSF 2.0) AI
Derived directly from the weakness types (CWEs) cited in the NVD entry via our AI-authored CWE→CSF cross-walk (authority under review) — links open the control.
Secure development practices directly include input validation and destination allow-listing that prevent SSRF.
Runtime monitoring of web applications and services can detect anomalous outbound requests indicative of SSRF.
Vulnerability identification processes can discover and record SSRF flaws in web applications.
Network segmentation and egress controls can limit the damage from successful SSRF requests.
Mitigating Controls (ISO/IEC 27001:2022 Annex A) AI
Derived directly from the weakness types (CWEs) cited in the NVD entry via our AI-authored CWE→ISO cross-walk (authority under review) — links open the control.
Operational threat data describing SSRF campaigns can be used to tighten outbound-request allow-lists and detection rules before attackers exploit them.