# CVE-2026-3454: Information disclosure in GenerateBlocks

> Authenticated contributors can expose sensitive post data and author emails via insecure direct object reference in the GenerateBlocks WordPress plugin.

- **Severity:** Medium 6.5 (`CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/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:** 5 May 2026
- **Updated:** 5 May 2026
- **Also known as:** GHSA-6288-wf2g-3fwm

## What is CVE-2026-3454?

CVE-2026-3454 is a medium-severity vulnerability in edge22 GenerateBlocks, published on 5 May 2026. Any signed-in user can exploit it over the network, with no action from the victim.

### Official description

The GenerateBlocks plugin for WordPress is vulnerable to Insecure Direct Object Reference in all versions up to, and including, 2.2.0. This is due to missing object-level authorization checks in the /wp-json/generateblocks/v1/dynamic-tag-replacements REST endpoint. The endpoint only verifies that the user has the edit_posts capability but does not verify the user has permission to access the specific post or its associated data referenced by attacker-controlled id parameters in dynamic tag content. This makes it possible for authenticated attackers, with Contributor-level access and above, to extract sensitive information from arbitrary posts including author email addresses and non-protected post meta values by crafting dynamic tag payloads such as {{post_meta id:<target>|key:<meta_key>}} and {{post_title id:<target>|link:author_email}}.

Weakness: CWE-639 (Authorization Bypass Through User-Controlled Key)

## Which versions are affected by CVE-2026-3454?


## How do I fix CVE-2026-3454?

No fix has been published for CVE-2026-3454 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-3454 being exploited?

There is no known exploitation of CVE-2026-3454 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-3454 and fix it if it is affected.

What it is: CVE-2026-3454 is a medium-severity vulnerability in edge22 GenerateBlocks, published on 5 May 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-2026-3454 in the wild and no public exploit code.

Affected product: edge22 GenerateBlocks. 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-2026-3454/ (Markdown: https://insights.sbomify.com/CVE-2026-3454/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-3454
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-3454
- OSV: https://osv.dev/vulnerability/CVE-2026-3454

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-3454/
Summaries are generated and may contain mistakes; the official description above is the record.