CVE-2026-16302 Spectra Legacy – Gutenberg Blocks <= 2.20.0 - Authenticated (Contributor+) Sensitive Information Exposure
Authenticated contributors can extract sensitive Instagram API tokens from the Spectra Legacy WordPress plugin if Spectra Pro is active.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-16302?
CVE-2026-16302 is a medium-severity vulnerability in brainstormforce Spectra Legacy – Gutenberg Blocks, published on 24 Sep 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official 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.
Weakness: CWE-200
Which versions are affected by CVE-2026-16302?
How do I fix CVE-2026-16302?
No fix has been published for CVE-2026-16302 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-16302 being exploited?
There is no known exploitation of CVE-2026-16302 in the wild and no public exploit code.
Sources
Also known as GHSA-gp3v-wjjp-mr9p.