Security readout for executives and security teams
Plain-English summary
CVE-2026-1826 affects the OpenPOS Lite WooCommerce point-of-sale plugin for WordPress up to version 3.0. A logged-in user with Contributor-level access or higher can store malicious script in a shortcode attribute, causing it to run when someone views the affected page.
Executive priority
Treat as a moderate-priority website security issue. It is not remotely exploitable by anonymous users based on current sources, but compromised or over-privileged contributor accounts could abuse it to affect customers, staff, or administrators viewing injected content.
Technical view
The issue is stored cross-site scripting in the order_qrcode shortcode width parameter, caused by insufficient input sanitization and output escaping. It is tracked as CWE-79 with CVSS 3.1 score 6.4. Attackers need authenticated Contributor+ privileges; impact is limited confidentiality and integrity, with no availability impact stated.
Likely exposure
WordPress sites using OpenPOS Lite – Point of Sale for WooCommerce version 3.0 or earlier are the likely exposed population, especially sites allowing Contributor-level users or higher to create or edit content containing shortcodes.
Exploitation context
The provided sources do not show CISA KEV listing or confirmed active exploitation. Exploitation requires a valid authenticated account with Contributor-level privileges or higher and content placement that causes other users to view the injected page.
Researcher notes
Key evidence comes from the CVE description, Wordfence advisory, and WordPress plugin Trac references, including a changeset. The source bundle identifies versions up to and including 3.0 as vulnerable, but does not clearly name the first fixed release.
Mitigation direction
- Identify all WordPress sites running OpenPOS Lite for WooCommerce.
- Upgrade from version 3.0 or earlier when vendor guidance provides a fixed release.
- Restrict Contributor-level access to trusted users only.
- Review pages or posts using the order_qrcode shortcode.
- Monitor vendor, WordPress plugin, and Wordfence advisories for fixed-version details.
Validation and detection
- Check installed OpenPOS Lite plugin versions across WordPress sites.
- Confirm whether any site runs version 3.0 or earlier.
- Review Contributor and higher user accounts for business need.
- Search content for order_qrcode shortcode use with width attributes.
- Verify remediation against the WordPress plugin changeset or vendor release notes.
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-2026-1826 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
- 6.4 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/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:C/C:L/I:L/A:N3.12.7Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
6.4MediumVector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N
Source materials
- CVE List V5 sourceCVE List V5
- https://www.wordfence.com/threat-intel/vulnerabilities/id/e3bb88e9-e410-4ff7-b342-72c7b375dff1?source=cveCVE reference
- https://plugins.trac.wordpress.org/browser/wpos-lite-version/trunk/includes/admin/Admin.php#L3161CVE reference
- https://plugins.trac.wordpress.org/browser/wpos-lite-version/tags/3.0/includes/admin/Admin.php#L3161CVE reference
- https://plugins.trac.wordpress.org/changeset/3456299/CVE reference
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 Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.