Security readout for executives and security teams
Plain-English summary
A vulnerable WordPress gallery plugin can let an authenticated administrator store malicious script in a gallery title. That script could run later in another user’s browser. The main business risk is compromise of WordPress admin sessions or content integrity on sites still running old plugin versions.
Executive priority
Prioritize remediation on public WordPress sites and sites with multiple content administrators. This is not documented as actively exploited in the provided sources, but stored XSS can support account compromise and reputational damage.
Technical view
Grid Gallery – Photo Image Grid Gallery before 1.2.5 lacks proper sanitization for the image gallery title field when added through the admin dashboard, causing authenticated stored XSS. The bundle maps this to CWE-79 and provides no CVSS vector.
Likely exposure
Exposure is limited to WordPress sites using Grid Gallery – Photo Image Grid Gallery versions before 1.2.5, especially where multiple users have dashboard access.
Exploitation context
The source bundle does not show CISA KEV listing or active exploitation. Exploitation requires authenticated access to the WordPress admin dashboard according to the description, reducing likelihood but not impact if editor or admin accounts are shared or compromised.
Researcher notes
Evidence indicates improper sanitization of the gallery title field in an authenticated admin workflow. No CVSS, exploit details, or KEV signal are provided. Validate through version inventory and content review, and avoid assuming unauthenticated exposure.
Mitigation direction
- Upgrade Grid Gallery – Photo Image Grid Gallery to 1.2.5 or later.
- Restrict WordPress dashboard access to trusted, necessary users only.
- Review existing gallery titles for suspicious script-like content.
- Check vendor or plugin repository guidance for any additional remediation.
Validation and detection
- Inventory WordPress sites for the Grid Gallery plugin and installed version.
- Confirm no installation runs a version before 1.2.5.
- Review admin user lists for unnecessary or stale accounts.
- Inspect recent gallery title changes for unexpected content.
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-2021-24529 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
- Unknown
- CVSS
- Not scored
- Known Exploited
- No
- Published
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 and timeline data
No CVSS vectors or timeline events were available in the normalized CVE source material.
Source materials
- CVE List V5 sourceCVE List V5
- https://wpscan.com/vulnerability/8953d931-19f9-4b73-991c-9c48db1af8b5CVE reference · x_refsource_MISC
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.