What is CVE-2026-16302?

CVE-2026-16302 is a medium-severity vulnerability in Brainstormforce Spectra Legacy – Gutenberg Blocks, classified under Information Disclosure. CVSS score: 4.3/10. Published 2026-09-24.

How severe is CVE-2026-16302?

Medium severity. CVSS v3 base score is 4.3 out of 10.

Information disclosure in Brainstormforce Spectra Legacy – Gutenberg Blocks

CVE-2026-16302

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.

Vulnerability class: Information Disclosure

Published 2026-09-24 · last modified 2026-09-24.

CVSS v3 metric

CVSS v3 base score 4.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N.

EPSS exploit prediction

No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.

Affected products

Brainstormforce Spectra Legacy – Gutenberg Blocks

Weakness classification (CWE)

CWE-200 — Information Disclosure

References

Frequently asked questions

What is CVE-2026-16302?: CVE-2026-16302 is a medium-severity vulnerability in Brainstormforce Spectra Legacy – Gutenberg Blocks, classified under Information Disclosure. CVSS score: 4.3/10. Published 2026-09-24.
How severe is CVE-2026-16302?: Medium severity. CVSS v3 base score is 4.3 out of 10.