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mediumCVSS 4.3NVD status: Analyzed

CVE-2026-34506

OpenClaw before 2026.3.8 contains a sender allowlist bypass vulnerability in its Microsoft Teams plugin that allows unauthorized senders to bypass intended authorization checks.

ComponentOpenClaw
Severitymedium (CVSS 4.3)
CVSS vectorCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
Published (NVD)2026-03-31
Last modified2026-07-24
Affected versions
openclaw < 2026.3.8
Fixed in2026.3.8
WeaknessCWE-863
CISA KEVnot listed

NVD description

OpenClaw before 2026.3.8 contains a sender allowlist bypass vulnerability in its Microsoft Teams plugin that allows unauthorized senders to bypass intended authorization checks. When a team/channel route allowlist is configured with an empty groupAllowFrom parameter, the message handler synthesizes wildcard sender authorization, permitting any sender in the matched team/channel to trigger replies in allowlisted Teams routes.

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What to do

  • Upgrade OpenClaw to 2026.3.8 or later.
  • Do not expose the component's API or UI to the internet without authentication in front of it.

Sources

Read more

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