Security readout for executives and security teams
Plain-English summary
A WordPress video player addon can reflect unsafe input into a page, allowing cross-site scripting if a user follows a crafted link or otherwise interacts. This can affect site trust and user sessions, but the bundle does not show confirmed active exploitation.
Executive priority
High for organizations using this specific WordPress addon, especially on public-facing sites. It is not enough to patch WordPress core; teams must verify the addon directly. No source in the bundle proves active exploitation, so prioritize based on confirmed deployment and site sensitivity.
Technical view
CVE-2025-53559 is CWE-79 reflected XSS in LambertGroup Universal Video Player - Addon for WPBakery Page Builder through version 3.2.1. CVSS 3.1 is 7.1: network reachable, low complexity, no privileges required, user interaction required, changed scope, and low confidentiality, integrity, and availability impact.
Likely exposure
Known exposure is WordPress sites running lbg-universal-video-player-addon-visual-composer, Universal Video Player - Addon for WPBakery Page Builder, version 3.2.1 or earlier. The sources do not identify WordPress core, WPBakery itself, or other LambertGroup products as affected.
Exploitation context
The CVE is not marked in KEV, and the provided sources do not confirm active exploitation. Reflected XSS typically requires user interaction, matching the CVSS vector. The bundle does not provide exploit details, affected endpoints, or a vendor remediation note.
Researcher notes
The public bundle establishes vulnerability class, affected product, affected version range, CVSS, CWE, and Patchstack as the vulnerability database source. It does not include a proof of concept, vulnerable parameter, endpoint, fixed version, or vendor advisory details, so validation should avoid assumptions beyond installed-version exposure.
Mitigation direction
- Inventory WordPress sites for the affected addon and version.
- Check LambertGroup or marketplace guidance for an updated fixed release.
- If no fix is available, disable or remove the addon where business impact allows.
- Apply compensating controls for untrusted input handling at the web edge.
- Prioritize remediation on public sites and authenticated user portals.
Validation and detection
- Confirm whether the plugin package is installed on each WordPress site.
- Record installed addon versions and flag version 3.2.1 or earlier.
- Review vendor and Patchstack records for fixed-version information.
- Check web logs for unusual requests targeting the affected addon.
- Document any sites where the addon remains enabled pending vendor guidance.
Public sources used
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
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-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.
Open ATT&CK lookupCVE-2025-53559 mapping review
Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.
Open ATT&CK lookup- Severity
- High
- CVSS
- 7.1 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:L
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.
CVSS vector scores
1 official scoreWe 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.
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:L2.83.7Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
7.1HighVector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:L
Source materials
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.
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.