# CVE-2026-39579: bPlugins B Blocks privilege escalation in WordPress plugin

Source: https://junglewise.ai/threats/cve-2026-39579-bplugins-b-blocks-privilege-escalation-in-wordpress-plugin  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-06-15. Updated: 2026-06-15  
License: CC BY 4.0 with a link back

CVE-2026-39579 · Severity: high · CVSS 8.8 · Published 2026-06-15

B Blocks, a WordPress plugin used for enhancing page building capabilities, contains a security flaw that allows users with low-level 'Contributor' accounts to gain unauthorized administrative access. By exploiting this vulnerability, an attacker could take full control of the website, potentially leading to data theft, site defacement, or the installation of malicious software. This poses a significant risk to site integrity and operational continuity.

Technologies: [bPlugins B Blocks](https://junglewise.ai/threats/technologies/b-blocks). Vendors: [bPlugins](https://junglewise.ai/threats/vendors/bplugins).

## Quick answers

**Is CVE-2026-39579 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-39579 being exploited in the wild.

**How severe is CVE-2026-39579?** High severity, with a CVSS score of 8.8, published 15 June 2026.

**Which products and versions are affected?** bPlugins B Blocks <= 2.0.31.

**Is there a fix for CVE-2026-39579?** No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.

**How is CVE-2026-39579 attacked?** It is attacked over the network, in a software library.

**Am I affected by CVE-2026-39579?** Check whether you run bPlugins B Blocks at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## Technical details

The B Blocks plugin for WordPress (versions up to and including 2.0.31) is vulnerable to privilege escalation due to incorrect privilege assignment (CWE-266). An authenticated attacker with 'Contributor' level permissions can exploit this flaw via the network without user interaction to escalate their privileges. Successful exploitation allows the attacker to gain unauthorized access to administrative functions, potentially leading to a complete site takeover. The issue is addressed in version 2.0.32.

## Affected products

- bPlugins B Blocks <= 2.0.31

## Timeline

- 2026-01-21: other: Reported by Abu Hurayra
- 2026-04-16: advisory: Patchstack advisory published
- 2026-06-15: disclosed: NVD publication date

## References

- [https://patchstack.com/database/wordpress/plugin/b-blocks/vulnerability/wordpress-b-blocks-plugin-2-0-31-privilege-escalation-vulnerability?_s_id=cve](https://patchstack.com/database/wordpress/plugin/b-blocks/vulnerability/wordpress-b-blocks-plugin-2-0-31-privilege-escalation-vulnerability?_s_id=cve)

## Related threats

- [bPlugins B Blocks stored cross-site scripting](https://junglewise.ai/threats/cve-2026-125451-improper-neutralization-of-input-during-web-page-generation)
- [bPlugins B Blocks stored cross-site scripting](https://junglewise.ai/threats/cve-2026-104400-improper-neutralization-of-input-during-web-page-generation)