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CVE-2026-28481

CVE-2026-28481 · OpenClaw < 2026.2.1 - Bearer Token Leakage via MS Teams Attachment Downloader Suffix Matching

This page contains facts from public vulnerability sources. Check the original advisory before updating.

OpenClaw versions 2026.1.30 and earlier, contain an information disclosure vulnerability, patched in 2026.2.1, in the MS Teams attachment downloader (optional extension must be enabled) that leaks bearer tokens to allowlisted suffix domains. When retrying downloads after receiving 401 or 403 responses, the application sends Authorization bearer tokens to untrusted hosts matching the permissive suffix-based allowlist, enabling token theft.

CVSS 5.9 · Medium · EPSS 0.3% · Fix available

Published
Updated

Stack: node

Affected products and versions

  • openclaw

    Versions
    • ≥ 0, ≤ 2026.1.30: Affected (custom)
    • 2026.2.1: Not affected (custom)

    Update to 2026.2.1

  • openclaw npm

    Affected ranges
    • SEMVER: < 2026.2.1

    Update to 2026.2.1

Original sources

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