Vulnerability Report

CVE-2026-28477

Title: OAuth State Validation Bypass (CSRF Bypass)

Arbitrary File Access

Proof Of Concept

No public PoC currently indexed for CVE-2026-28477.

CWE Category CWE-352

Published Date Mar 05, 2026

Modified Date Mar 17, 2026

Exploit Status Not Found

Score 5.9 CVSS v4.0

Exploit Probability (EPSS)

0.13%

Vulnerability Summary

CVE-2026-28477: OpenClaw versions prior to 2026.2.14 contain an oauth state validation bypass vulnerability in the manual Chutes login flow that allows attackers to bypass CSRF protection. An attacker can convince a user to paste attacker-controlled OAuth callback data, enabling credential substitution and token persistence for unauthorized accounts.

Impacted Vendors

openclaw 1

Reference Links

https://github.com/openclaw/openclaw/commit/a99ad11a4107ba8eac58f54a3c1a8a0cf5686f47 https://github.com/openclaw/openclaw/security/advisories/GHSA-7rcp-mxpq-72pj https://www.vulncheck.com/advisories/openclaw-oauth-state-validation-bypass-in-manual-chutes-login-flow

CVSS v4.0

Source Entity [email protected]

Severity MEDIUM

5.9

Attack Vector

NETWORK

Complexity

LOW

Privileges

N/A

Interaction

ACTIVE

Confidentiality

N/A

Integrity

N/A

Availability

N/A

Scope

N/A

RAW VECTOR

CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:A/VC:H/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

CVSS v3.1

Source Entity [email protected]

Severity HIGH

7.1

Attack Vector

NETWORK

Complexity

LOW

Privileges

N/A

Interaction

REQUIRED

Confidentiality

N/A

Integrity

N/A

Availability

N/A

Scope

UNCHANGED

RAW VECTOR CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:L/A:N

Associated Attack Patterns (CAPEC)

Total: Patterns