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CVE-2026-28395

OpenClaw 2026.1.14-1 < 2026.2.12 - Unintended Public Binding of Chrome Extension Relay via Wildcard cdpUrl

6.3 MediumFix available

OpenClaw version 2026.1.14-1 prior to 2026.2.12 contains an improper network binding vulnerability in the Chrome extension (must be installed and enabled) relay server that treats wildcard hosts as loopback addresses, allowing the relay HTTP/WS server to bind to all interfaces when a wildcard cdpUrl is configured. Remote attackers can access relay HTTP endpoints off-host to leak service presence and port information, or conduct denial-of-service and brute-force attacks against the relay token header.

Attack profile

How easy it is to exploit

Attack vector
Network
Complexity
Low
Privileges needed
None
User interaction
None

What an attacker can affect

Confidentiality
Low
Integrity
None
Availability
Low

Exploit likelihood

0.46%Up 0.4 points since Mar 6, 2026
90%50%10%1%

What each source reports

CVE List Score used 6.3

OpenClaw 2026.1.14-1 < 2026.2.12 - Unintended Public Binding of Chrome Extension Relay via Wildcard cdpUrl

OpenClaw version 2026.1.14-1 prior to 2026.2.12 contains an improper network binding vulnerability in the Chrome extension (must be installed and enabled) relay server that treats wildcard hosts as loopback addresses, allowing the relay HTTP/WS server to bind to all interfaces when a wildcard cdpUrl is configured. Remote attackers can access relay HTTP endpoints off-host to leak service presence and port information, or conduct denial-of-service and brute-force attacks against the relay token header.

Record
CVE-2026-28395
CVSS 4.0
6.3 MediumCVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:N/VA:L/SC:N/SI:N/SA:N
CVSS 3.1
6.5 MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:L
Weakness
CWE-1327
Updated
2026-11-02
EUVDEUVD-2026-9895 6.3

OpenClaw version 2026.1.14-1 prior to 2026.2.12 contains an improper network binding vulnerability in the Chrome extension (must be installed and enabled) relay server that treats wildcard hosts as loopback addresses, allowing the relay HTTP/WS server to bind to all interfaces when a wildcard cdpUrl is configured. Remote attackers can access relay HTTP endpoints off-host to leak service presence and port information, or conduct denial-of-service and brute-force attacks against the relay token header.

Record
EUVD-2026-9895
CVSS 4.0
6.3 MediumCVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:N/VA:L/SC:N/SI:N/SA:N
Updated
2026-11-02
GitHub AdvisoriesGHSA-qw99-grcx-4pvm 6.3

OpenClaw's Chrome extension relay binds publicly due to wildcard treated as loopback

Summary

The Chrome extension relay (ensureChromeExtensionRelayServer) previously treated wildcard hosts (0.0.0.0 / ::) as loopback, which could make it bind the relay HTTP/WS server to all interfaces when a wildcard cdpUrl was passed.

Impact

If configured with a wildcard cdpUrl, relay HTTP endpoints could become reachable off-host, leaking service presence/port and enabling DoS/brute-force traffic against the relay token header.

Affected Packages / Versions

  • Package: openclaw (npm)
  • Affected: >= 2026.1.14-1 < 2026.2.12

Fixed Versions

  • Patched: >= 2026.2.12 (released 2026-02-13)

Fix Commit(s)

  • 8d75a496bf5aaab1755c56cf48502d967c75a1d0

Notes

  • Earlier hardening for /json* auth and /cdp token checks landed in:
    • a1e89afcc19efd641c02b24d66d689f181ae2b5c

Thanks @qi-scape for reporting.

Record
GHSA-qw99-grcx-4pvm
CVSS 4.0
6.3 MediumCVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:N/VA:L/SC:N/SI:N/SA:N
CVSS 3.1
6.5 MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:L
Weakness
CWE-284, CWE-1327
Updated
2026-11-02
NVD 6.3

OpenClaw version 2026.1.14-1 prior to 2026.2.12 contains an improper network binding vulnerability in the Chrome extension (must be installed and enabled) relay server that treats wildcard hosts as loopback addresses, allowing the relay HTTP/WS server to bind to all interfaces when a wildcard cdpUrl is configured. Remote attackers can access relay HTTP endpoints off-host to leak service presence and port information, or conduct denial-of-service and brute-force attacks against the relay token header.

Record
CVE-2026-28395
CVSS 4.0
6.3 MediumCVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:N/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:X
CVSS 3.1
6.5 MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:L
CVSS 3.1
9.1 CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H
Weakness
CWE-1327
Updated
2026-11-02
OSV 6.3

OpenClaw 2026.1.14-1 < 2026.2.12 - Unintended Public Binding of Chrome Extension Relay via Wildcard cdpUrl

OpenClaw version 2026.1.14-1 prior to 2026.2.12 contains an improper network binding vulnerability in the Chrome extension (must be installed and enabled) relay server that treats wildcard hosts as loopback addresses, allowing the relay HTTP/WS server to bind to all interfaces when a wildcard cdpUrl is configured. Remote attackers can access relay HTTP endpoints off-host to leak service presence and port information, or conduct denial-of-service and brute-force attacks against the relay token header.

Record
CVE-2026-28395
CVSS 4.0
6.3 MediumCVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:N/VA:L/SC:N/SI:N/SA:N
Weakness
CWE-1327
Updated
2026-11-02
OSVGHSA-qw99-grcx-4pvm 6.3

OpenClaw's Chrome extension relay binds publicly due to wildcard treated as loopback

Summary

The Chrome extension relay (ensureChromeExtensionRelayServer) previously treated wildcard hosts (0.0.0.0 / ::) as loopback, which could make it bind the relay HTTP/WS server to all interfaces when a wildcard cdpUrl was passed.

Impact

If configured with a wildcard cdpUrl, relay HTTP endpoints could become reachable off-host, leaking service presence/port and enabling DoS/brute-force traffic against the relay token header.

Affected Packages / Versions

  • Package: openclaw (npm)
  • Affected: >= 2026.1.14-1 < 2026.2.12

Fixed Versions

  • Patched: >= 2026.2.12 (released 2026-02-13)

Fix Commit(s)

  • 8d75a496bf5aaab1755c56cf48502d967c75a1d0

Notes

  • Earlier hardening for /json* auth and /cdp token checks landed in:
    • a1e89afcc19efd641c02b24d66d689f181ae2b5c

Thanks @qi-scape for reporting.

Record
GHSA-qw99-grcx-4pvm
CVSS 4.0
6.3 MediumCVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:N/VA:L/SC:N/SI:N/SA:N
CVSS 3.1
6.5 MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:L
Weakness
CWE-1327, CWE-284
Updated
2026-11-02

Affected products

Affected packages

Affected packages
PackageAffectedFixed
openclaw
npm
 2026.1.14-1 up to 2026.2.12
2026.2.12

History

History
RecordedChangedSources
first indexedCVE List, EUVD, GitHub Advisories, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2026-28395 is a medium vulnerability (CVSS 6.3) in Openclaw, published February 17, 2026. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.46%, the 40th percentile. Fixed in openclaw 2026.2.12.

References

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