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CVE Record

CVE-2026-2029: Livemesh Addons for Beaver Builder <= 3.9.2 - Authenticated (Contributor+) Stored Cross-Site Scripting via 'title' and 'value' Shortcode Attributes

The Livemesh Addons for Beaver Builder plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the `[labb_pricing_item]` shortcode's `title` and `value` attributes in all versions up to, and including, 3.9.2 due to insufficient input sanitization and output escaping. Specifically, the plugin uses `htmlspecialchars_decode()` after `wp_kses_post()`, which decodes HTML entities back into executable code after sanitization has occurred. This makes it possible for authenticated attackers, with Contributor-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.

MediumCVSS 6.4Not KEV-listedUpdated
Glexia's TakeAutomated analysismoderate

Security readout for executives and security teams

Plain-English summary

CVE-2026-2029 affects the Livemesh Addons for Beaver Builder WordPress plugin. A logged-in user with Contributor-level access or higher could save malicious script in a pricing item shortcode. That script may run when visitors or administrators view the affected page. This is a medium-risk issue because it requires an authenticated account, but it can still impact site trust and user sessions.

Executive priority

Treat as a moderate-priority website security issue. Prioritize sites with many content contributors, untrusted authors, or administrator visits to contributor-created pages. If the plugin is not business-critical, consider temporary disablement until vendor guidance confirms remediation.

Technical view

The issue is stored cross-site scripting in the [labb_pricing_item] shortcode title and value attributes in Livemesh Addons for Beaver Builder through 3.9.2. The CVE description attributes this to insufficient sanitization and escaping, specifically decoding entities after wp_kses_post(). CVSS is 6.4 with low privileges required, network attack vector, changed scope, and low confidentiality and integrity impact.

Likely exposure

WordPress sites using Livemesh Addons for Beaver Builder version 3.9.2 or earlier are the relevant exposure, especially where Contributor or higher accounts are allowed to create shortcode content. The provided sources do not identify other affected products.

Exploitation context

The source bundle does not show CISA KEV listing or active exploitation evidence. Exploitation requires an authenticated WordPress account with Contributor-level access or higher and placement of malicious content in affected shortcode attributes. Successful exploitation could execute script in browsers of users viewing the injected page.

Researcher notes

The provided references point to shortcode handling in the pricing table module and the CVE description explains the sanitization bypass pattern. No exploit proof, patch commit, or fixed version is included in the supplied sources, so remediation should be verified against authoritative vendor or WordPress plugin information.

Mitigation direction

  • Inventory WordPress sites using Livemesh Addons for Beaver Builder.
  • Identify installations running version 3.9.2 or earlier.
  • Check vendor or WordPress plugin guidance for an updated fixed version.
  • Restrict Contributor-level and higher access to trusted users only.
  • Review pages using the affected pricing item shortcode.
  • Temporarily disable the plugin if business risk outweighs functionality need.

Validation and detection

  • Confirm plugin name and installed version in WordPress administration or asset inventory.
  • Search site content for use of the labb_pricing_item shortcode.
  • Review recent edits by Contributor-level or higher accounts.
  • Inspect affected pages for unexpected script behavior or injected markup.
  • Verify remediation against vendor guidance when a fixed version is identified.
Prepared
Confidence
high
Sources
5

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.

Potential ATT&CK relevance

Conservative CVE-to-ATT&CK context

These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.

ATT&CK lookup starting points

Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.

cwe · medium confidence lookup

CWE-79: User-session and phishing behavior lookup

Client-side and session-facing weaknesses should be reviewed alongside initial-access and user-execution behaviors. Open the exact CWE lookup page first, then review the ATT&CK searches from that MITRE weakness context. This is a Glexia lookup hint, not an official ATT&CK mapping.

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cve · low confidence lookup

CVE-2026-2029 mapping review

Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.

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Vulnerability profileCVE Program record
Severity
Medium
CVSS
6.4 (3.1)
Known Exploited
No
Published

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

Official CVE source material

CNA and ADP enrichment extracted from CVE v5

These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.

1CVSS vectors
0Timeline events
0ADP providers
3Source links

CVSS vector scores

1 official score

We collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.

ScoreVersionSeverityVectorExploitImpactSource
6.4CVSS 3.1MediumCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N3.12.7Primary CVE score

Vulnerability scoring details

Base CVSS 3.1 score

6.4Medium
CVSS 3.1 vector shape for CVE-2026-2029Attack VectorAttack ComplexityPrivileges RequiredUser InteractionScopeConfidentiality ImpactIntegrity ImpactAvailability Impact

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

Attack Vector
NetworkAdjacentLocalPhysical
Attack Complexity
LowHigh
Privileges Required
NoneLowHigh
User Interaction
NoneRequired
Scope
ChangedUnchanged
Confidentiality Impact
HighLowNone
Integrity Impact
HighLowNone
Availability Impact
HighLowNone
Affected products

Products and packages named in the record

VendorProductVersion / packageStatus
livemeshLivemesh Addons for Beaver Builder0unaffected
Weakness

CWE details

CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.

CWE-79 · source CWE mapping

Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.