Security readout for executives and security teams
Plain-English summary
CVE-2026-27056 is a medium-severity access control flaw in the WordPress iThemes Sync plugin through version 3.2.8. A logged-in user may be able to perform actions they should not be authorized to perform, causing limited integrity impact. No public source provided indicates active exploitation.
Executive priority
Treat as a near-term hygiene item, not an emergency, unless affected sites have many untrusted users. The business risk is unauthorized modification rather than data theft or outage, based on the published scoring.
Technical view
The issue is classified as missing authorization, CWE-862, in StellarWP iThemes Sync. 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 limited to WordPress sites running iThemes Sync versions through 3.2.8. The CVSS vector requires an authenticated, low-privileged user, so risk is higher on sites with many user accounts or weak account governance.
Exploitation context
The provided sources do not report known exploitation or CISA KEV listing. Exploitation would require some authenticated access and targets authorization gaps, not unauthenticated takeover based on the available CVSS data.
Researcher notes
Source data names affected versions through 3.2.8, but the affected-version object is sparse and shows defaultStatus as unaffected. No fixed version, exploit details, or vendor remediation text is present in the supplied bundle. Validate against vendor and Patchstack updates before final remediation decisions.
Mitigation direction
- Inventory WordPress sites for the iThemes Sync plugin and installed version.
- Prioritize review of sites running iThemes Sync 3.2.8 or earlier.
- Check StellarWP, WordPress plugin, or Patchstack guidance for a fixed version or mitigation.
- Restrict unnecessary WordPress user accounts and remove stale low-privilege users.
- Monitor administrative or plugin-related actions by non-administrator accounts.
Validation and detection
- Confirm whether iThemes Sync is installed on each WordPress instance.
- Record the installed plugin version and compare against <= 3.2.8.
- Review user roles, especially low-privilege accounts with site access.
- Check logs for unexpected configuration or management actions by non-admin users.
- Track vendor advisories for clarification on fixed releases.
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-2026-27056 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.