CVE-2026-28477Network attack vector

Credential substitution via unchecked OAuth callback state

Published Mar 5, 2026 · Updated Mar 5, 2026

CSRF in OpenClaw before 2026.2.14 allows remote attackers to substitute credentials through the manual Chutes OAuth flow. The parseOAuthCallbackInput function accepts a pasted authorization code as valid while assigning the expected state without verifying returned state. Exploitation requires a user to paste attacker-controlled callback data, after which tokens for the wrong Chutes account persist; the automatic callback flow is unaffected.

CVSS severity5.9
Medium
EPSS probability0.13%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

CSRF in OpenClaw before 2026.2.14 allows remote attackers to substitute credentials through the manual Chutes OAuth flow. The parseOAuthCallbackInput function accepts a pasted authorization code as valid while assigning the expected state without verifying returned state. Exploitation requires a user to paste attacker-controlled callback data, after which tokens for the wrong Chutes account persist; the automatic callback flow is unaffected.

The record

CVE
CVE-2026-28477
Published
Mar 5, 2026
Updated
Mar 5, 2026
Vendor
OpenClaw Foundation
Product
OpenClaw
Classifications
CWE-352, T1204
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Mar 5, 2026CVE publishedPublication date reported by the CVE source.
  2. Mar 5, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0 <2026.2.14

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

OpenClaw Foundation · OpenClawversion=0 <2026.2.14

Published CVSS scores

7.1VulnCheckCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:L/A:N
5.9VulnCheckCVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:A/VC:H/VI:L/VA:N/SC:N/SI:N/SA:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-352Cross-Site Request Forgery (CSRF)
T1204User Execution

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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