VulnerabilityPublished 7 Nov 2026

CVE-2026-123466: Premium Blocks (WordPress plugin) · Missing Authorization

Affects Premium Blocks (WordPress plugin)Source CVE Database V5

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Not known to be exploited · CVSS 5.3 Medium : upgrade to 2.3.19 when convenient.

Data as of 7 Nov 2026, 09:19 UTC

CVSS 3.1 base score

5.3Medium

How severe the flaw is on the 0–10 CVSS scale.

Thin evidence

One scorer or none

CVSS scores by source
CNA (Patchstack)	CVSS 3.1	5.3

Patch: Available – fixed in 2.3.19

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

Attack Vector: Network
Attack Complexity: Low
Privileges Required: None
User Interaction: None
Scope: Unchanged
Confidentiality: Low
Integrity: None
Availability: None

Bold values are the worst case: easiest to exploit or largest impact.

Attack Vector: Network: The vulnerable component is bound to the network stack and the set of possible attackers extends beyond the other options listed, up to and including the entire Internet. Such a vulnerability is often termed 'remotely exploitable' and can be thought of as an attack being exploitable at the protocol level one or more network hops away (e.g., across one or more routers).
Attack Complexity: Low: Specialized access conditions or extenuating circumstances do not exist. An attacker can expect repeatable success against the vulnerable component.
Privileges Required: None: The attacker is unauthorized prior to attack, and therefore does not require any access to settings or files to carry out an attack.
User Interaction: None: The vulnerable system can be exploited without any interaction from any user.
Scope: Unchanged: An exploited vulnerability can only affect resources managed by the same security authority. In this case, the vulnerable component and the impacted component are either the same, or both are managed by the same security authority.
Confidentiality: Low: There is some loss of confidentiality. Access to some restricted information is obtained, but the attacker does not have control over what information is obtained, or the amount or kind of loss is limited. The information disclosure does not cause a direct, serious loss to the impacted component.
Integrity: None: There is no loss of integrity within the impacted component.
Availability: None: There is no impact to availability within the impacted component.

Definitions: FIRST CVSS v3.1 specification.

Exploitation evidence

Disclosed: evidence found.
CVE published 7 Nov 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 6 Nov 2026.

Disclosed: The CVE record is public on cve.org. Its publication is t = 0.
Detectable: A public nuclei template can find exposed instances, for defenders and attackers alike.
Weaponized: A Metasploit exploit module or Exploit-DB entry exists (Metasploit scanner modules do not count), or CISA SSVC or the CVSS exploit maturity reports a public proof of concept.
Exploited in the wild: CISA KEV lists it, CISA SSVC rates exploitation active, or a source reports attacks.
Observed by OffSeq Mirage: OffSeq Mirage honeypot sensors recorded attack traffic for this CVE, or found exposed hosts without attack traffic.

Moments are spaced evenly, not to scale; a dashed line marks a gap of six months or more. Deltas count from t = 0. Sources that give only a date (CISA KEV, Exploit-DB, or a time of exactly 00:00Z) read “same day” rather than hours. Metasploit modules carry the flaw’s disclosure date, not their release date, and nuclei templates carry no date, so both appear above but not on the timeline.

What to do

Upgrade Premium Blocks (WordPress plugin) to 2.3.19.

Affected software

Product	Affected	Fixed in
Premium Blocks – Gutenberg Blocks for WordPresspremium-blocks-for-gutenberg	Affected <2.3.19	Fixed in 2.3.19

AI-suggested

Upgrade the Premium Blocks – Gutenberg Blocks for WordPress plugin to version 2.3.19 or later, where this missing authorization vulnerability has been fixed. No additional mitigation steps are required once the update is applied.

Description

CVE-2026-123466 is a missing authorization vulnerability in LeapWorx Premium Blocks – Gutenberg Blocks for WordPress. It affects versions from the initial release up to 2.3.18. The flaw allows unauthorized access due to incorrectly configured access control security levels. A fix is available in version 2.3.19.

Impact

An attacker can exploit this missing authorization vulnerability to gain unauthorized access to certain plugin functionalities or data, potentially leading to limited confidentiality loss. There is no impact on integrity or availability reported. No known exploits are currently observed in the wild.

Summary

This vulnerability in the Premium Blocks – Gutenberg Blocks for WordPress plugin arises from missing authorization checks, enabling exploitation of incorrectly configured access control. The issue affects all versions prior to 2.3.19. The CVSS 3.1 base score is 5.3, indicating a medium severity with network attack vector, low attack complexity, no privileges required, no user interaction, and limited confidentiality impact. The vendor has fixed the vulnerability in version 2.3.19.

References

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 (opens in a new tab)

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Affected software

Description

AI analysisMachine-generated, updated 7 Nov 2026, 09:19 UTC

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