Security readout for executives and security teams
Plain-English summary
CVE-2026-25345 is a critical vulnerability in the WordPress SimpLy Gallery plugin through version 3.3.2. A low-privileged logged-in user may be able to execute arbitrary code, risking full website compromise, data exposure, defacement, or service disruption.
Executive priority
Treat as urgent for any internet-facing WordPress site using SimpLy Gallery. Prioritize discovery and containment first, because the sources do not provide a fixed version. Business impact could include site takeover, data theft, and downtime.
Technical view
The issue is described as CWE-1284 improper input validation in GalleryCreator SimpLy Gallery / simply-gallery-block. CVSS 3.1 is 9.9: network exploitable, low complexity, low privileges required, no user interaction, changed scope, and high confidentiality, integrity, and availability impact.
Likely exposure
Exposure is limited to WordPress sites with the SimpLy Gallery plugin installed at version 3.3.2 or earlier. Sites allowing untrusted or broadly distributed authenticated accounts have higher practical risk because the CVSS vector requires low privileges.
Exploitation context
The provided data does not show CISA KEV listing or cited evidence of active exploitation. The vulnerability is still high urgency because it is remotely reachable, low complexity, and can lead to arbitrary code execution after low-privilege authentication.
Researcher notes
The source bundle identifies versions through 3.3.2 as affected, but does not provide exploit details, a patch version, or confirmed exploitation. Avoid assuming unauthenticated exploitation; CVSS specifies PR:L. Validate against authoritative vendor or Patchstack updates before declaring remediation complete.
Mitigation direction
- Identify all WordPress sites using the SimpLy Gallery plugin.
- If version is 3.3.2 or earlier, check vendor or Patchstack guidance immediately.
- Disable or remove the plugin where it is not business-critical.
- Restrict creation and use of low-privileged WordPress accounts.
- Increase monitoring for suspicious WordPress admin and plugin activity.
Validation and detection
- Inventory WordPress plugins across production, staging, and public-facing sites.
- Confirm the installed SimpLy Gallery plugin version.
- Review whether untrusted users have WordPress accounts on affected sites.
- Check vendor, WordPress plugin, or Patchstack pages for fixed-version guidance.
- Review recent site logs for unexpected authenticated activity.
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-1284: Exact CWE lookup
Use the exact CWE identifier as the starting point before reviewing related ATT&CK behavior. 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 lookupExecution behavior lookup
The CVE wording references code or command execution, so execution technique review may help defensive triage. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.
Open ATT&CK lookupCVE-2026-25345 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
- Critical
- CVSS
- 9.9 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
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:C/C:H/I:H/A:H3.16Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
9.9CriticalVector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
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 Validation of Specified Quantity in Input
Improper Validation of Specified Quantity in Input represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.