CVE-2026-35656· NVD / CVE Program· CNA VulnCheck

OpenClaw < 2026.3.22 - XFF Loopback Spoofing Bypass in Canvas Authentication and Rate Limiter

OpenClaw before 2026.3.22 contains an authentication bypass vulnerability in the X-Forwarded-For header processing when trustedProxies is configured, allowing attackers to spoof loopback hops. Remote attackers can inject forged forwarding headers to bypass canvas authentication and rate-limiting protections by masquerading as loopback clients.

MediumCVSS 6.3 · v4.0—No exploit Fix available

GHSA-844j-xrrq-wgh4

Published: Apr 10, 2026
Updated: Jun 23, 2026
EPSS: 0.6% · 44th percentile
CWE: CWE-290

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Action score

Monitor

Low priority for now.

CVSS: 25 / 40 · 6.3 / 10
CISA KEV: 0 / 30 · Not listed
EPSS: 0 / 30 · 0.6%

CISA SSVC decision

Exploitation: none
Automatable: yes
Technical impact: partial

Vulnrichment: CISA's decision-tree inputs.

CNA vs NVD score

NVD: —
CNA · VulnCheck: 6.3; NVD has not scored this yet; the score shown is the CNA’s.

CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N

The score given by the assigning authority versus NVD’s independent score. A gap means the severity is contested.

Noroxi analysis

No Noroxi analysis for this record yet

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Affected systems

Vendor	Product	CPE
openclaw	openclaw	cpe:2.3:a:openclaw:openclaw

Affected versions

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

openclaw openclawbefore 2026.3.22

Versions reported by the vendor

Affected version ranges reported by the assigning authority (VulnCheck). Independent of NVD's CPE analysis and usually ahead of it.

OpenClaw OpenClaw
- 2026.3.22not affected
- before 2026.3.22affected · semver

Package-level exposure

OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.

Ecosystem	Package	Affected range	Fix
npm	openclaw	before 2026.3.22	2026.3.22

Same product

openclaw: all records

Other highest-scoring records for the same primary product.

CVE-2026-25253OpenClaw (aka clawdbot or Moltbot) before 2026.1.29 obtains a gatewayUrl value from a query string and automatically makes a WebSocket conne
42Plan
CVE-2026-30741A remote code execution (RCE) vulnerability in OpenClaw Agent Platform v2026.2.6 allows attackers to execute arbitrary code via a Request-Si
39Monitor
CVE-2026-43534OpenClaw < 2026.4.10 - Unsanitized External Input in Agent Hook Events
37Monitor
CVE-2026-33579OpenClaw < 2026.3.28 - Privilege Escalation via Missing Caller Scope Validation in Device Pair Approval
37Monitor
CVE-2026-32917OpenClaw < 2026.3.13 - Remote Command Injection via Unsanitized iMessage Attachment Paths in SCP
37Monitor
CVE-2026-32987OpenClaw < 2026.3.13 - Bootstrap Setup Code Replay via Device Pairing
37Monitor

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

Product / package	Fixed version	Source
OpenClaw OpenClaw	2026.3.22	Vendor (CNA)
npm:openclaw	2026.3.22	Package registry (OSV)

Exploit status

No known public exploit

No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

No dated events beyond publication.

EPSS, last 120 days

FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).

Patch and commit links

Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.

Credits

All researchers

Finders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.

lintsinghuareporter

Variant candidates

Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.

CVE-2026-3201422 days apartOpenClaw < 2026.2.26 - Node Reconnect Metadata Spoofing via Unsigned Platform Fields
34Monitor
CVE-2026-4411826 days apartOpenClaw < 2026.4.22 - Owner Context Spoofing via Bearer Token Header
34Monitor
CVE-2026-5381762 days apartOpenClaw < 2026.5.22 - Control UI Locality Spoofing in Device Pairing
34Monitor
CVE-2026-5382363 days apartOpenClaw < 2026.5.3 - Privilege Escalation via Mutable Slack Display Names in allowFrom
34Monitor
CVE-2026-5384967 days apartOpenClaw < 2026.5.7 - Privilege Escalation via Mutable Discord Display Names in allowFrom
34Monitor
CVE-2026-5385767 days apartOpenClaw < 2026.5.3 - Mutable Display Name Binding in Zalo allowFrom Policy
34Monitor

Chain candidates

An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.

CVE-2026-356500 days apartOpenClaw < 2026.3.22 - Environment Variable Override Bypass via Inconsistent Sanitization
30Monitor
CVE-2026-356680 days apartOpenClaw < 2026.3.24 - Sandbox Media Root Bypass via Unnormalized mediaUrl and fileUrl Parameters
28Monitor
CVE-2026-356321 days apartOpenClaw <= 2026.2.22 - Symlink Traversal via IDENTITY.md appendFile in agents.create/update
27Monitor
CVE-2026-36890 days apartOpenClaw Canvas Path Traversal Information Disclosure Vulnerability
26Monitor

Bug bounty scope

No known public program.

Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).

Technical details

Attack conditions

Anyone who can reach it over the internet can trigger it.
No account or password is required.
No user action is required.
No special conditions are required; it is repeatable.

If successful

Confidentiality
Integrity
Availability

Attack vector: Network
Attack complexity: Low
Privileges required: None
User interaction: None
Scope: X

Weakness class (CWE)

CWE-290 · Authentication Bypass by Spoofing

CVSS vector

CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:L/VA:N/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:X

nvd-secondary

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

Attack patterns (CAPEC)

ATT&CK techniques

Change log

Fix✗ → ✓Sep 28, 2026, 10:09 PM UTC

For records you follow, these changes also arrive as notifications. →

References

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

All records

Noroxi analysis

No Noroxi analysis for this record yet

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Data sources and verification

CNA: VulnCheck

CVE.org (CNA)Jun 23, 2026, 4:16 PM UTC
CISA ADPJun 23, 2026, 4:16 PM UTC
NVDJun 23, 2026, 4:16 PM UTC
FIRST EPSSOct 5, 2026, 12:00 AM UTC
OSV / GHSAOct 6, 2026, 3:23 AM UTC

Each line is when that source was last processed for this record.

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