Security readout for executives and security teams
Plain-English summary
CVE-2026-24389 is a medium-severity cross-site scripting issue in the WordPress Gallery PhotoBlocks plugin through version 1.3.2. A logged-in user could trigger malicious script execution when another user interacts with affected content. This can impact confidentiality, integrity, and availability at a limited level.
Executive priority
Treat as a scheduled remediation item unless the plugin is widely deployed on high-value sites with many contributors. Prioritize faster if untrusted users can access WordPress authoring functions.
Technical view
The issue is CWE-79 DOM-based XSS in WP Chill Gallery PhotoBlocks, package photoblocks-grid-gallery. CVSS 3.1 is 6.5 with network attack vector, low complexity, low privileges required, user interaction required, and changed scope. Public sources do not provide payload details, fixed-version information, or exploitation evidence.
Likely exposure
Exposure is limited to WordPress sites using Gallery PhotoBlocks photoblocks-grid-gallery version 1.3.2 or earlier. Sites without the plugin, or with versions outside the affected range, are not indicated as affected by the provided sources.
Exploitation context
The CVSS vector indicates exploitation requires a low-privileged authenticated user and user interaction. It is not listed in CISA KEV, and the provided sources do not state active exploitation or public exploit availability.
Researcher notes
Evidence is sparse. The record identifies DOM-based XSS and CVSS attributes but does not document affected code paths, exploit primitives, fixed versions, or real-world exploitation. Avoid assuming a patch exists until vendor guidance confirms it.
Mitigation direction
- Inventory WordPress sites for the Gallery PhotoBlocks plugin.
- Identify installations running version 1.3.2 or earlier.
- Check WP Chill or Patchstack guidance for a fixed version or workaround.
- Restrict plugin access to trusted users until remediation is confirmed.
- Remove the plugin if it is not business-critical.
Validation and detection
- Confirm plugin presence and exact version on each WordPress site.
- Review vendor and Patchstack advisories for updated remediation status.
- Verify only trusted users can create or edit gallery-related content.
- Use approved WordPress vulnerability scanning to flag affected installations.
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-2026-24389 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
- 6.5 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:L/PR:L/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:L/UI:R/S:C/C:L/I:L/A:L2.33.7Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
6.5MediumVector: CVSS:3.1/AV:N/AC:L/PR:L/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.