Security readout for executives and security teams
Plain-English summary
CVE-2026-4063 affects the WPZOOM Social Icons Widget & Block WordPress plugin through version 4.5.8. A logged-in low-privilege user can create a published sharing configuration that injects social sharing buttons into site post content. Business impact is mainly unauthorized site-content modification and brand/presentation disruption, not data theft or full site takeover based on current sources.
Executive priority
Address in normal vulnerability management cycles, faster for sites with open registration or many untrusted users. The issue enables unauthorized content presentation changes but is not described as data compromise or remote unauthenticated takeover.
Technical view
The plugin’s add_menu_item() method, hooked to admin_menu, lacks an administrator capability check before calling wp_insert_post() and update_post_meta(). Authenticated users with Subscriber-level access or higher can create a published wpzoom-sharing configuration with default settings, causing frontend injection through the_content filter. CVSS is 4.3, CWE-862, with low integrity impact.
Likely exposure
WordPress sites using Social Icons Widget & Block by WPZOOM versions up to and including 4.5.8 are the likely exposure. Risk increases where public registration or many low-privilege accounts exist.
Exploitation context
Sources describe authenticated exploitation by Subscriber-level users or higher. CISA KEV is not indicated, and the provided sources do not report active exploitation in the wild.
Researcher notes
Evidence points to a missing authorization check in a WordPress admin_menu-linked method. The vulnerability requires authentication and affects integrity only per CVSS. The source bundle references code locations and a plugin Trac changeset, but does not explicitly name a fixed version.
Mitigation direction
- Inventory WordPress sites for the WPZOOM Social Icons Widget & Block plugin.
- Upgrade beyond affected versions if vendor or WordPress plugin guidance provides a fixed release.
- If no fixed release is available, follow vendor guidance or consider temporary deactivation.
- Limit public user registration and remove unnecessary Subscriber-level accounts.
- Review and remove unexpected wpzoom-sharing configurations from affected sites.
Validation and detection
- Confirm installed plugin version is not 4.5.8 or earlier.
- Check whether low-privilege account creation is enabled on affected WordPress sites.
- Review published wpzoom-sharing configuration posts for unexpected creation.
- Verify patched code enforces administrator capability checks before configuration creation.
- Inspect frontend posts for unexpected social sharing button injection.
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-862: Authorization and privilege behavior lookup
Authorization weaknesses can support privilege escalation and valid-account review, depending on exploit path. 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-2026-4063 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
- Medium
- CVSS
- 4.3 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
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:L/UI:N/S:U/C:N/I:L/A:N2.81.4Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
4.3MediumVector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
Source materials
- CVE List V5 sourceCVE List V5
- https://www.wordfence.com/threat-intel/vulnerabilities/id/6af64b51-1758-495f-b6d7-364488de9ab8?source=cveCVE reference
- https://plugins.trac.wordpress.org/browser/social-icons-widget-by-wpzoom/trunk/includes/classes/class-wpzoom-social-sharing-buttons.php#L110CVE reference
- https://plugins.trac.wordpress.org/browser/social-icons-widget-by-wpzoom/tags/4.5.8/includes/classes/class-wpzoom-social-sharing-buttons.php#L110CVE reference
- https://plugins.trac.wordpress.org/changeset?sfp_email=&sfph_mail=&reponame=&new=3481444%40social-icons-widget-by-wpzoom%2Ftrunk&old=3462717%40social-icons-widget-by-wpzoom%2Ftrunk&sfp_email=&sfph_mail=CVE reference
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.
Missing Authorization
Missing Authorization represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.