# 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.

- **Severity:** Medium 4.3 (`CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Any signed-in user
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 24 Sep 2026
- **Updated:** 24 Sep 2026
- **Also known as:** GHSA-gp3v-wjjp-mr9p

## 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 (Exposure of Sensitive Information to an Unauthorized Actor)

## 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.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-16302 and fix it if it is affected.

What it is: 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.
Exploitation: There is no known exploitation of CVE-2026-16302 in the wild and no public exploit code.

Affected product: brainstormforce Spectra Legacy – Gutenberg Blocks. No package-level version data is available, so check the vendor advisory linked from the reference page.

Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.

Reference: https://insights.sbomify.com/CVE-2026-16302/ (Markdown: https://insights.sbomify.com/CVE-2026-16302/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-16302
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-16302
- OSV: https://osv.dev/vulnerability/CVE-2026-16302

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From sbomify Insights: https://insights.sbomify.com/CVE-2026-16302/
Summaries are generated and may contain mistakes; the official description above is the record.