{"cve":"CVE-2026-28481","nvd":{"published":"2026-03-05T22:16:22.810","modified":"2026-06-17T10:28:43.653","status":"Analyzed","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.","cvss_v4":{"vector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:A/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N","score":5.9},"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N","score":7.5},"cwes":["CWE-201"],"references":["https://github.com/openclaw/openclaw/commit/41cc5bcd4f1d434ad1bbdfa55b56f25025ecbf6b","https://github.com/openclaw/openclaw/security/advisories/GHSA-7vwx-582j-j332","https://www.vulncheck.com/advisories/openclaw-bearer-token-leakage-via-ms-teams-attachment-downloader-suffix-matching"],"products":["openclaw:openclaw"],"source":"nvd","synced_at":"2026-10-19T22:25:53.701907451+00:00"},"epss":{"cve":"CVE-2026-28481","score":0.00303,"percentile":0.23091,"date":"2026-10-31"},"kev":null,"osv":[{"id":"GHSA-7vwx-582j-j332","url":"https://osv.dev/vulnerability/GHSA-7vwx-582j-j332","summary":"OpenClaw MS Teams inbound attachment downloader leaks bearer tokens to allowlisted suffix domains","modified":"2026-03-06T01:17:23.703704Z","packages":[{"ecosystem":"npm","name":"openclaw","purl":"pkg:npm/openclaw","ranges":["<2026.2.1"],"fixed":["2026.2.1"]}]}],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}