Security readout for executives and security teams
Plain-English summary
CVE-2026-25445 is a high-severity flaw in the WordPress WishList Member X plugin through version 3.29.0. It involves unsafe handling of serialized data, which can allow an authenticated attacker to inject PHP objects. Business risk is highest for membership sites where many users can log in with low privileges.
Executive priority
Treat this as a near-term remediation item for affected membership sites. It has high potential impact, but current public evidence does not show active exploitation or name a fixed release.
Technical view
The CVE describes CWE-502 deserialization of untrusted data in Membership Software WishList Member X. CVSS 3.1 is 8.8, with network access, low complexity, low privileges required, and no user interaction. Potential impact is high across confidentiality, integrity, and availability. Public sources do not identify a fixed version or confirm exploitation.
Likely exposure
WordPress sites running WishList Member X version 3.29.0 or earlier are the likely exposure. Risk is greater where untrusted or numerous users have accounts, because the CVSS vector indicates low privileges are required.
Exploitation context
No active exploitation is stated in the provided sources, and the CVE is not marked KEV. The vulnerability class can be serious because PHP object injection may lead to broader impact when exploitable gadget chains exist, but those details are not provided here.
Researcher notes
Assessment is limited by sparse public detail. The CVSS vector indicates authenticated network exploitation with low complexity. Do not assume unauthenticated exposure. Confirm affected code paths and remediation status from vendor materials before broad claims.
Mitigation direction
- Inventory WordPress sites for WishList Member X installations.
- Identify any instances running version 3.29.0 or earlier.
- Check vendor and Patchstack guidance for a fixed version or official mitigation.
- If no safe update is available, consider disabling the plugin temporarily.
- Restrict account creation and low-privilege access where business operations allow.
Validation and detection
- Confirm plugin name and version from WordPress administration or asset inventory.
- Prioritize sites allowing public registration or many member accounts.
- Review security monitoring for unusual authenticated plugin activity.
- Track CVE, vendor, and Patchstack pages for fix or exploit-status updates.
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-2026-25445 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.