EUVD-2026-45102
GHSA-24g4-9847-8c6x
Severity by source
CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:H/VI:N/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
AT:P prerequisite maps to AC:H in 3.1; PR:L reflects required lower-trust caller authentication; impact is confidentiality-only with no scope change.
Primary rating from Vendor (VulnCheck).
CVSS VectorVendor: VulnCheck
CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:H/VI:N/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
Lifecycle Timeline
2DescriptionCVE.org
OpenClaw versions before 2026.5.28 Bot Framework contains an improper input validation vulnerability that allows lower-trust callers to expose bot tokens and credentials by failing to properly validate serviceUrl parameters. Attackers can supply malicious serviceUrl values through configured input paths to retrieve sensitive authentication data outside the trusted boundary.
AnalysisAI
Bot token and credential exposure in OpenClaw Bot Framework (versions before 2026.5.28) enables low-privilege authenticated callers to exfiltrate sensitive authentication data by supplying crafted serviceUrl values that circumvent trusted boundary validation. The flaw resides in the Microsoft Teams integration component (openclaw:msteams) and allows attackers to redirect credential-bearing requests to attacker-controlled endpoints, compromising bot tokens and downstream authentication secrets. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Exploitation requires a caller with low-privilege authenticated access (PR:L per CVSS 4.0 vector) who can submit input to a configured path that accepts and processes the serviceUrl parameter. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS 4.0 vector (AV:N/AC:L/AT:P/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N) scores 6.0, balancing high confidentiality impact against meaningful pre-conditions: low-privilege authentication (PR:L) and a specific attack prerequisite (AT:P). … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | An attacker holding a low-privilege account or API key for an OpenClaw-integrated Microsoft Teams bot sends a request through a configured input path that includes a malicious serviceUrl pointing to attacker-controlled infrastructure. The unpatched framework processes the parameter without validation and issues a credential-bearing request - including bot tokens - to the attacker's endpoint, where the tokens are captured and can be replayed for subsequent impersonation or data access. … |
| Remediation | Upgrade OpenClaw to version 2026.5.28 or later, which introduces proper serviceUrl parameter validation. … Detailed patch versions, workarounds, and compensating controls in full report. |
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Token leakage in OpenClaw's MS Teams integration (versions before 2026.5.27) allows lower-trust authenticated callers to
Authorization bypass in OpenClaw MS Teams before 2026.5.12 allows authenticated lower-privileged users to escalate their
Same weakness CWE-522 – Insufficiently Protected Credentials
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External POC / Exploit Code
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