Security readout for executives and security teams
Plain-English summary
CVE-2026-28083 is a stored cross-site scripting issue in the WordPress Flatsome theme. A logged-in attacker could store malicious script that runs when another user views affected content. This can expose data, alter page behavior, or affect site availability at a limited level.
Executive priority
Treat as a routine but timely WordPress remediation item. Prioritize public sites with many contributors, customer-facing pages, or administrator workflows that view user-supplied content. There is no cited evidence of active exploitation in the provided sources.
Technical view
The CVE describes CWE-79 improper input neutralization during web page generation in UX-themes Flatsome through version 3.20.5. CVSS 3.1 is 6.5: network reachable, low attack complexity, low privileges required, user interaction required, scope changed, and low confidentiality, integrity, and availability impact.
Likely exposure
Exposure is likely limited to WordPress sites using the Flatsome theme at versions up to and including 3.20.5. Sites without Flatsome, or running a version outside the affected range, are not indicated as affected by the provided sources.
Exploitation context
No active exploitation is stated in the provided sources, and the CVE is not marked KEV. The scoring indicates an attacker needs some authenticated privilege and another user must interact with or view affected content for script execution.
Researcher notes
Evidence is limited to the CVE record and Patchstack reference. The CVE description names Flatsome through 3.20.5, while the Patchstack URL text references 3.20.1, so verify vendor details before final scoping. No exploit details or fixed version are provided in the source bundle.
Mitigation direction
- Inventory WordPress sites for the Flatsome theme and installed version.
- Check UX-themes and Patchstack guidance for a fixed version or official workaround.
- Update Flatsome when an official fixed release is available and tested.
- Restrict low-privilege content creation or editing on affected sites until remediated.
- Review theme-related custom content for suspicious stored scripts.
Validation and detection
- Confirm whether Flatsome is installed on each WordPress site.
- Record the installed Flatsome version and compare against <= 3.20.5.
- Check vendor or Patchstack advisories for fixed-version details.
- Review WordPress roles allowed to create or edit affected content.
- Inspect logs and content changes for suspicious script insertions.
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-79: User-session and phishing behavior lookup
Client-side and session-facing weaknesses should be reviewed alongside initial-access and user-execution behaviors. 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-2026-28083 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
- 6.5 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:L
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:R/S:C/C:L/I:L/A:L2.33.7Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
6.5MediumVector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:L
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.