Security readout for executives and security teams
Plain-English summary
This vulnerability affects the WordPress Post Grid and Gutenberg Blocks plugin. A logged-in user could abuse unsafe data deserialization to make the site process attacker-controlled PHP objects, potentially leading to loss of confidentiality, integrity, or availability. The supplied sources do not show active exploitation.
Executive priority
Treat this as a high-priority WordPress plugin issue where the plugin is deployed, especially on public sites with many user accounts. It is not KEV-listed in the supplied data, so urgency should be driven by exposure, authentication scope, and business criticality.
Technical view
CVE-2025-54007 is CWE-502 deserialization of untrusted data in PickPlugins Post Grid and Gutenberg Blocks through version 2.3.11. The CVSS vector indicates network access, low complexity, low privileges required, no user interaction, and high confidentiality, integrity, and availability impact.
Likely exposure
Exposure is likely limited to WordPress sites running the PickPlugins Post Grid and Gutenberg Blocks plugin, package post-grid, at version 2.3.11 or earlier. The CVSS privileges-required field indicates attacker access to some authenticated account is needed.
Exploitation context
The source bundle marks KEV as false and provides no cited evidence of exploitation in the wild. Practical impact may depend on the vulnerable code path and available PHP object chains in a specific WordPress installation.
Researcher notes
The bundle does not include exploit details, proof-of-concept status, or a named fixed version. Because PHP object injection severity depends on reachable gadget chains and code paths, validate affected installations carefully without assuming universal remote code execution.
Mitigation direction
- Inventory WordPress sites for the post-grid plugin and installed version.
- Prioritize sites running Post Grid and Gutenberg Blocks 2.3.11 or earlier.
- Check Patchstack and vendor guidance for the fixed version or recommended mitigation.
- Restrict unnecessary WordPress account access while remediation is pending.
- Back up affected sites before plugin updates or compensating changes.
Validation and detection
- Confirm whether the post-grid plugin is installed on each WordPress site.
- Record the installed plugin version and compare it with the affected range.
- Review vendor or Patchstack advisories for patch availability and remediation status.
- Check logs for suspicious authenticated activity against plugin-related functionality.
- Verify remediation by confirming the plugin is no longer in the affected range.
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-502: Code execution behavior lookup
Code execution and unsafe deserialization weaknesses often justify reviewing execution behavior and process telemetry. 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-2025-54007 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
- High
- CVSS
- 8.8 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/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:U/C:H/I:H/A:H2.85.9Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
8.8HighVector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/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.
Deserialization of Untrusted Data
Deserialization of Untrusted Data represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.