Security readout for executives and security teams
Plain-English summary
CVE-2026-23976 is a stored cross-site scripting issue in the WordPress Modula Image Gallery plugin up to version 2.13.4. A highly privileged user could store malicious script that runs when another user views the affected page. Business risk is moderate, mainly for WordPress sites where many users can manage gallery content.
Executive priority
Treat as a routine but time-bound WordPress plugin remediation. Prioritize public websites, sites with multiple content administrators, and environments where WordPress admin compromise would affect brand trust, customer data, or revenue workflows.
Technical view
The CVE describes CWE-79 improper input neutralization during web page generation in WP Chill Modula Image Gallery, package modula-best-grid-gallery. CVSS 3.1 is 5.9 with network access, low attack complexity, high privileges required, user interaction required, and changed scope. The public sources do not identify the vulnerable parameter, component path, or fixed version.
Likely exposure
Exposure appears limited to WordPress sites running Modula Image Gallery through version 2.13.4. Risk is higher where untrusted or semi-trusted users have elevated WordPress permissions to create or edit gallery content. Sites not using this plugin are not exposed based on the provided sources.
Exploitation context
No active exploitation is reported in the provided sources, and the CVE is not marked KEV. Exploitation requires high privileges and a victim interaction, reducing broad internet-scale risk. Stored XSS can still support account abuse, content manipulation, or session-impacting actions depending on WordPress configuration and victim role.
Researcher notes
Evidence is sparse. The CVE and Patchstack entry confirm stored XSS and version range through 2.13.4, but do not provide a fixed version or technical root-cause details in the supplied bundle. Avoid assuming exploit availability or broader affected products without additional vendor data.
Mitigation direction
- Inventory WordPress sites for the Modula Image Gallery plugin.
- Identify installations running version 2.13.4 or earlier.
- Check WP Chill or Patchstack guidance for an official fixed version.
- Restrict gallery-management permissions to trusted administrators until remediated.
- Review recent gallery changes made by privileged or unfamiliar accounts.
Validation and detection
- Confirm plugin name and package: modula-best-grid-gallery.
- Record installed plugin versions across all WordPress environments.
- Flag versions at or below 2.13.4 for remediation review.
- Verify whether vendor guidance names a fixed release.
- Check logs and content history for suspicious gallery edits.
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-2026-23976 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
- 5.9 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:L/PR:H/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:H/UI:R/S:C/C:L/I:L/A:L1.73.7Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
5.9MediumVector: CVSS:3.1/AV:N/AC:L/PR:H/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.