CVE WatchAug 20, 2026

CVE-2026-17153

The AI Agent by SiteGround plugin for WordPress is vulnerable to authorization bypass in all versions up to, and including, 1.2.7. This is d

CVSS

5.3

Medium

EPSS

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KEV

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Exploit Today

0-100

Published: Aug 20, 2026 · Last modified: Aug 20, 2026 · CWE-862

EPSS · 30d

Not enough EPSS history yet.

Technical description

The AI Agent by SiteGround plugin for WordPress is vulnerable to authorization bypass in all versions up to, and including, 1.2.7. This is due to the plugin not properly verifying that a user is authorized to perform an action. This makes it possible for unauthenticated attackers to upload images to the WordPress media library, bypassing the upload_files capability restriction that Contributors are normally subject to, as authenticated attackers with Contributor-level access or above can satisfy the endpoint's nonce and permission checks. The sg_ai_studio_gutenberg_nonce required by the endpoint is emitted to any user with block editor access — including Contributors — making the absent upload_files check the sole barrier to exploitation.

Official references

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