Security readout for executives and security teams
Plain-English summary
CVE-2026-25308 is a broken access control issue in the WordPress Simple Membership plugin through version 4.6.9. A logged-in user may be able to perform actions that should require higher authorization, causing limited integrity impact. It is not listed in CISA KEV, and the provided sources do not claim active exploitation.
Executive priority
Treat as a routine but timely WordPress plugin remediation. Prioritize sites with open registration, paid memberships, or business workflows relying on membership permissions. The business impact appears limited, but access control flaws can undermine trust in restricted content or member-only functions.
Technical view
The issue is CWE-862 Missing Authorization in wp.insider Simple Membership, package simple-membership, affecting versions up to and including 4.6.9. CVSS 3.1 is 4.3: network exploitable, low complexity, low privileges required, no user interaction, unchanged scope, low integrity impact, no confidentiality or availability impact.
Likely exposure
Exposure is likely limited to WordPress sites running Simple Membership version 4.6.9 or earlier. Exploitation requires an authenticated low-privilege account, so public registration or large membership bases increase practical risk.
Exploitation context
No active exploitation is indicated by the provided sources, and the CVE is not in CISA KEV. The access control weakness may let authenticated users bypass intended permission checks, but public details here do not describe specific impacted functions.
Researcher notes
The source bundle provides the vulnerability class, affected version ceiling, and CVSS vector, but not endpoint-level details or a confirmed fixed version. Avoid assuming exploitability beyond authenticated missing authorization with low integrity impact. Validate against the CVE record and Patchstack entry before closure.
Mitigation direction
- Inventory WordPress sites for the Simple Membership plugin.
- Identify installations running Simple Membership 4.6.9 or earlier.
- Check the vendor or Patchstack advisory for fixed-version guidance.
- Upgrade promptly if a vendor-fixed release is available.
- Restrict user registration and remove unnecessary low-privilege accounts where feasible.
Validation and detection
- Confirm plugin name and version from WordPress administration or asset inventory.
- Review membership roles and permissions for unnecessary access.
- Check logs for unusual authenticated actions by low-privilege users.
- Verify remediation against the vendor or Patchstack advisory.
- Document any sites where upgrade guidance is not yet available.
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-862: Authorization and privilege behavior lookup
Authorization weaknesses can support privilege escalation and valid-account review, depending on exploit path. 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-2026-25308 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
- Medium
- CVSS
- 4.3 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
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:N/I:L/A:N2.81.4Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
4.3MediumVector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
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.
Missing Authorization
Missing Authorization represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.