CVE-2026-28458 json
OpenClaw 2026.1.20 < 2026.2.1 - Missing Authentication in Browser Relay /cdp WebSocket Endpoint
published 8mo ago modified 4mo ago also GHSA-mr32-vwc2-5j6h , EUVD-2026-9906
- cvss
- 8.1
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.4%
- EPSS 0.4% chance of exploitation in 30 days, percentile 29%
- public exploits
- 0
- none known
Summary
OpenClaw version 2026.1.20 prior to 2026.2.1 contains a vulnerability in the Browser Relay (extension must be installed and enabled) /cdp WebSocket endpoint in which it does not require authentication tokens, allowing websites to connect via loopback and access sensitive data. Attackers can exploit this by connecting to ws://127.0.0.1:18792/cdp to steal session cookies and execute JavaScript in other browser tabs.
Patch / fix
- npm openclaw 2026.2.1
- OpenClaw OpenClaw 2026.2.1
Is CVE-2026-28458 in your dependencies? Fencer shows which of your repositories are affected as soon as an advisory lands, and opens the fix as a pull request.
Check with FencerCISA SSVC
- Exploitation
- none
- Automatable
- no
- Technical impact
- total
- Assessed
- 8mo ago
Exploit prediction
0.35% chance of exploitation in the next 30 days, higher than 29% of all scored CVEs (FIRST EPSS, 2026-11-09).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 4.0 | 7.4 | CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:A/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N |
| CNA | 3.1 | 8.1 | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N |
| CNA | 4.0 | 7.4 | CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:A/VC:H/VI:H/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 | 3.1 | 5.4 | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N |
| GitHub | 3.1 | 7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N |
Affected packages
| ecosystem | package | affected | fixed in |
|---|---|---|---|
| npm | openclaw | >=2026.1.20, <2026.2.1 |
2026.2.1 |
| npm | moltbot | <=0.1.0 |
no fix listed |
Affected products
- OpenClaw OpenClaw
Classification
- Weakness
-
- CWE-306 Missing Authentication for Critical Functionality
References
-
github.com
/openclaw/openclaw/commit/a1e89afcc19efd641c02b24d66d689f181ae2b5c
patch, web
-
github.com
/openclaw/openclaw/security/advisories/GHSA-mr32-vwc2-5j6h
vendor-advisory, web
-
vulncheck.com
/advisories/openclaw-missing-authentication-in-browser-relay-cdp-websocket-endpoint
third-party-advisory, web
-
nvd.nist.gov
/vuln/detail/CVE-2026-28458
advisory
-
github.com
/openclaw/openclaw
package
-
github.com
/openclaw/openclaw/releases/tag/v2026.2.1
web
Sources
- CVE List CVE-2026-28458
- GitHub Advisory GHSA-mr32-vwc2-5j6h
- NVD CVE-2026-28458
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