Security readout for executives and security teams
Plain-English summary
CVE-2026-0687 affects the Meta-box GalleryMeta WordPress plugin up to version 3.0.1. Logged-in users with Author-level access or higher can create and publish galleries without the intended authorization check. This is not a site takeover issue, but it can let lower-privileged users publish unauthorized content.
Executive priority
Treat as a routine but timely content-integrity issue. Prioritize sites with many Author-level users, public publishing workflows, or brand-sensitive content. It does not currently justify emergency response unless suspicious gallery activity is observed.
Technical view
The plugin lacks a capability check for the mb_gallery custom post type, categorized as CWE-862. The CVSS 3.1 score is 4.3: network-accessible, low complexity, requires low privileges, no user interaction, and impacts integrity only. Sources identify versions through 3.0.1 as vulnerable.
Likely exposure
Exposure is limited to WordPress sites using Meta-box GalleryMeta version 3.0.1 or earlier where untrusted or semi-trusted users have Author, Editor, or Administrator access. Sites without this plugin, without Author-level users, or not using gallery publishing workflows have lower practical exposure.
Exploitation context
No CISA KEV listing or provided source indicates active exploitation. Abuse requires an authenticated account with Author-level privileges or higher. The likely impact is unauthorized creation and publication of gallery content, which may affect site integrity, brand trust, or content governance.
Researcher notes
The available references point to missing authorization around the mb_gallery custom post type and relevant plugin code locations. The source bundle does not name a fixed version or patch commit. Avoid assuming remediation beyond vendor guidance, access reduction, monitoring, or plugin removal.
Mitigation direction
- Check whether Meta-box GalleryMeta is installed and whether its version is 3.0.1 or earlier.
- Review vendor, WordPress plugin, and Wordfence guidance for an updated fixed release.
- Restrict Author-level access to trusted users until remediation is confirmed.
- Disable or remove the plugin if it is not business-critical.
- Review recently created or published galleries for unauthorized changes.
Validation and detection
- Inventory WordPress sites for the Meta-box GalleryMeta plugin.
- Confirm installed plugin versions against the vulnerable range through 3.0.1.
- Review users with Author, Editor, or Administrator roles.
- Check whether unexpected galleries were created or published.
- Verify that a vendor-supported fix or compensating control is in place.
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-2026-0687 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/872c61aa-c95c-4b86-8e39-8112bb117a0b?source=cveCVE reference
- https://plugins.trac.wordpress.org/browser/meta-box-gallerymeta/tags/3.0.1/include/posttype.php#L29CVE reference
- https://plugins.trac.wordpress.org/browser/meta-box-gallerymeta/tags/3.0.1/gallerymetaboxes.php#L375CVE 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.