Security readout for executives and security teams
Plain-English summary
CVE-2026-25360 is a high-severity issue in the WordPress Vex theme by rascals. Sites running Vex versions below 1.2.9 may allow an authenticated low-privilege user to trigger unsafe PHP object handling, potentially affecting confidentiality, integrity, and availability.
Executive priority
Treat as a near-term patching priority for WordPress environments using Vex. Business urgency is highest where many low-privilege users can log in or where WordPress supports revenue, customer engagement, or brand-sensitive content.
Technical view
The issue is CWE-502, deserialization of untrusted data, leading to PHP object injection in Vex before 1.2.9. CVSS 3.1 is 8.8 with network access, low attack complexity, low privileges required, no user interaction, and high CIA impact.
Likely exposure
Exposure is limited to WordPress installations using the rascals Vex theme below version 1.2.9. The CVSS vector indicates an attacker needs low privileges, so public registration, contributor accounts, or compromised user accounts may increase practical risk.
Exploitation context
The provided sources do not show CISA KEV listing or confirmed active exploitation. They also do not provide exploit details. Risk remains material because PHP object injection can become severe when reachable code paths and object chains exist.
Researcher notes
Sources identify the class and version range but not the vulnerable code path or exploit conditions beyond PR:L. Do not assume unauthenticated exploitability. Further validation should focus on affected theme versions, reachable deserialization, and vendor guidance.
Mitigation direction
- Inventory WordPress sites for the rascals Vex theme.
- Upgrade Vex to version 1.2.9 or later where available.
- If upgrade is not possible, follow vendor or Patchstack guidance.
- Restrict unnecessary low-privilege WordPress accounts until remediated.
- Monitor vendor advisories for updated remediation details.
Validation and detection
- Confirm whether each WordPress site uses the Vex theme.
- Record the installed Vex version on each affected site.
- Flag any Vex installation below 1.2.9 as vulnerable.
- Verify remediation by confirming version 1.2.9 or later.
- Review logs for suspicious authenticated activity where feasible.
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-2026-25360 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.