Moderate severityNVD Advisory· Published Mar 5, 2026· Updated Mar 9, 2026
OpenClaw < 2026.2.1 - Bearer Token Leakage via MS Teams Attachment Downloader Suffix Matching
CVE-2026-28481
Description
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.
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Affected packages
Versions sourced from the GitHub Security Advisory.
| Package | Affected versions | Patched versions |
|---|---|---|
openclawnpm | < 2026.2.1 | 2026.2.1 |
Affected products
2Patches
Vulnerability mechanics
References
6- github.com/openclaw/openclaw/commit/41cc5bcd4f1d434ad1bbdfa55b56f25025ecbf6bghsapatchWEB
- github.com/advisories/GHSA-7vwx-582j-j332ghsaADVISORY
- github.com/openclaw/openclaw/security/advisories/GHSA-7vwx-582j-j332ghsavendor-advisoryWEB
- nvd.nist.gov/vuln/detail/CVE-2026-28481ghsaADVISORY
- www.vulncheck.com/advisories/openclaw-bearer-token-leakage-via-ms-teams-attachment-downloader-suffix-matchingghsathird-party-advisoryWEB
- github.com/openclaw/openclaw/releases/tag/v2026.2.1ghsaWEB
News mentions
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