CVE-2026-16302: CWE-200 Exposure of Sensitive Information to an Unauthorized Actor in brainstormforce Spectra Legacy – Gutenberg Blocks
The Spectra Legacy – Gutenberg Blocks plugin for WordPress is vulnerable to Sensitive Information Exposure in all versions up to, and including, 2.20.0 via the editor_assets function, which exposes the uag_insta_linked_accounts option through the uagb_blocks_info object without a capability check. This makes it possible for authenticated attackers, with Contributor-level access and above, to extract sensitive data including raw Instagram Graph API access tokens configured by an administrator. Exploitation requires the Spectra Pro plugin to be active with a linked Instagram account.
AI Analysis
Technical Summary
CVE-2026-16302 is a sensitive information exposure vulnerability in the Spectra Legacy – Gutenberg Blocks WordPress plugin (versions up to 2.20.0). The flaw resides in the editor_assets function, which exposes the uag_insta_linked_accounts option through the uagb_blocks_info object without verifying user capabilities. Authenticated users with Contributor-level permissions or higher can extract sensitive data, including raw Instagram Graph API access tokens configured by administrators. Successful exploitation requires the Spectra Pro plugin to be active and linked to an Instagram account.
Potential Impact
Authenticated attackers with Contributor-level access or above can obtain sensitive Instagram Graph API access tokens, potentially allowing unauthorized access to Instagram data associated with the linked account. This exposure compromises confidentiality but does not affect integrity or availability.
Mitigation Recommendations
No official patch or fix is currently documented. Users should monitor the vendor advisory for updates. Until a fix is available, restrict Contributor-level access to trusted users only and consider disabling the Spectra Pro plugin or unlinking Instagram accounts if possible to reduce risk.
CVE-2026-16302: CWE-200 Exposure of Sensitive Information to an Unauthorized Actor in brainstormforce Spectra Legacy – Gutenberg Blocks
Description
The Spectra Legacy – Gutenberg Blocks plugin for WordPress is vulnerable to Sensitive Information Exposure in all versions up to, and including, 2.20.0 via the editor_assets function, which exposes the uag_insta_linked_accounts option through the uagb_blocks_info object without a capability check. This makes it possible for authenticated attackers, with Contributor-level access and above, to extract sensitive data including raw Instagram Graph API access tokens configured by an administrator. Exploitation requires the Spectra Pro plugin to be active with a linked Instagram account.
CVSS v3.1
Score 4.3medium
Affected software
brainstormforce
Spectra Legacy – Gutenberg Blocks
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-16302 is a sensitive information exposure vulnerability in the Spectra Legacy – Gutenberg Blocks WordPress plugin (versions up to 2.20.0). The flaw resides in the editor_assets function, which exposes the uag_insta_linked_accounts option through the uagb_blocks_info object without verifying user capabilities. Authenticated users with Contributor-level permissions or higher can extract sensitive data, including raw Instagram Graph API access tokens configured by administrators. Successful exploitation requires the Spectra Pro plugin to be active and linked to an Instagram account.
Potential Impact
Authenticated attackers with Contributor-level access or above can obtain sensitive Instagram Graph API access tokens, potentially allowing unauthorized access to Instagram data associated with the linked account. This exposure compromises confidentiality but does not affect integrity or availability.
Mitigation Recommendations
No official patch or fix is currently documented. Users should monitor the vendor advisory for updates. Until a fix is available, restrict Contributor-level access to trusted users only and consider disabling the Spectra Pro plugin or unlinking Instagram accounts if possible to reduce risk.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- Wordfence
- Date Reserved
- 2026-07-20T13:12:38.874Z
- Cvss Version
- 3.1
- State
- PUBLISHED
Threat ID: 6ab50e0cf7a7c5410644f2e6
Added to database: 09/24/2026, 11:48:28 UTC
Last enriched: 09/24/2026, 12:03:15 UTC
Last updated: 09/25/2026, 01:56:02 UTC
Views: 9
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