Threats Tagged 'cve-2026-73851'

CVE-2026-73851 is a path traversal vulnerability in Microsoft Kiota affecting versions prior to 1.29.1. It allows an attacker controlling the OpenAPI description to supply crafted file references that resolve outside the intended plugin package, potentially causing unauthorized file inclusion or disclosure. Initial mitigations rejected unsafe paths based on raw strings but failed to decode percent-encoded or obfuscated inputs, allowing bypasses. Subsequent fixes decode inputs before validation and reject control characters and Unicode homoglyphs. Users should upgrade to the first release after version 1.33.0 that includes these fixes. Workarounds include generating plugins only from trusted OpenAPI descriptions and reviewing manifests for unsafe file references.