Security readout for executives and security teams
Plain-English summary
CVE-2026-2448 affects the WordPress plugin Page Builder by SiteOrigin through version 2.33.5. A logged-in user with Contributor-level access or higher may be able to make the site include local server files. In some conditions, this can expose sensitive data or lead to server-side PHP code execution.
Executive priority
Prioritize remediation for public WordPress sites with multiple content contributors or user-generated uploads. The vulnerability has high impact but requires authenticated access, so urgency depends on who holds Contributor-level accounts and whether upload paths are available.
Technical view
The issue is a local file inclusion vulnerability in Page Builder by SiteOrigin, tied to locate_template() use in the post loop widget code path. The CVE describes authenticated Contributor+ attackers including and executing arbitrary server files, including uploaded files that may otherwise be treated as safe. CVSS 3.1 is 8.8, CWE-22.
Likely exposure
Exposure is most relevant to WordPress sites running Page Builder by SiteOrigin version 2.33.5 or earlier, especially sites that allow Contributor-level users or higher and permit media uploads. Sites without untrusted authenticated users have lower practical exposure, but should still validate plugin versions.
Exploitation context
The CVE requires authenticated access with Contributor privileges or higher. The source bundle does not show CISA KEV listing or cited evidence of active exploitation. Impact may include access-control bypass, sensitive data exposure, or PHP code execution when includable files are present.
Researcher notes
Evidence is limited to the CVE record, Wordfence advisory, and WordPress plugin source reference. The supplied data does not include a confirmed fixed version, proof of exploitation, or KEV listing. Avoid assuming internet-scale exploitation without additional cited evidence.
Mitigation direction
- Identify all WordPress sites using Page Builder by SiteOrigin.
- Update the plugin to a version newer than 2.33.5 if available.
- If no update is available, check SiteOrigin or WordPress plugin guidance.
- Restrict Contributor-level access to trusted users only.
- Review whether Contributors can upload files on affected sites.
Validation and detection
- Confirm installed Page Builder by SiteOrigin versions across WordPress assets.
- Flag any installation at version 2.33.5 or earlier.
- Review user roles for Contributor or higher access.
- Check whether untrusted users have media upload capability.
- Monitor WordPress and web logs for suspicious template or file inclusion errors.
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-22: File access and web shell behavior lookup
File traversal and upload weaknesses can lead teams to review file, web shell, execution, and collection 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 lookupExecution behavior lookup
The CVE wording references code or command execution, so execution technique review may help defensive triage. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.
Open ATT&CK lookupCVE-2026-2448 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
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.
Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal') represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.