Security readout for executives and security teams
Plain-English summary
CVE-2026-1748 affects the Invoct PDF Invoices & Billing for WooCommerce WordPress plugin through version 1.6. A logged-in low-privilege user can access invoice client data, invoice items, and WordPress user emails because permission checks are missing. This is a data exposure issue, not a site takeover vulnerability based on the provided sources.
Executive priority
Handle as a near-term privacy and customer-data exposure issue. It does not appear to enable full compromise, but it can expose customer invoice information and user emails to low-privilege accounts. Prioritize internet-facing WooCommerce sites, especially those allowing customer self-registration.
Technical view
The issue is CWE-862: missing authorization checks across multiple plugin functions. CVSS is 4.3 with network access, low complexity, low privileges required, no user interaction, and limited confidentiality impact. Sources identify authenticated Subscriber-level users as able to retrieve invoice clients, invoice items, and WordPress users with email addresses in versions up to 1.6.
Likely exposure
Exposure is limited to WordPress sites running Invoct – PDF Invoices & Billing for WooCommerce version 1.6 or earlier. Risk increases where untrusted users can register or hold Subscriber-level accounts. Public e-commerce sites with customer accounts should treat this as more urgent than private sites with tightly controlled users.
Exploitation context
The provided sources do not show active exploitation, and the CVE is not listed as KEV. Exploitation requires an authenticated account with Subscriber-level access or higher. The impact described is information disclosure, specifically invoice-related records and WordPress user email addresses.
Researcher notes
The bundle cites vulnerable code locations in tag 1.6 and a tag 1.7 reference, but it does not provide enough quoted detail here to independently state the exact patch mechanics. Treat the core defect as missing capability checks in plugin functions and validate against official plugin and Wordfence guidance.
Mitigation direction
- Identify all WordPress sites using the Invoct PDF Invoices plugin.
- Upgrade from version 1.6 or earlier if a newer vendor version is available.
- Check WordPress.org plugin and vendor guidance for the current fixed release.
- Restrict user registration if not required for business operations.
- Review whether Subscriber-level access is granted to untrusted users.
Validation and detection
- Confirm installed plugin name and version on each WordPress site.
- Prioritize sites running version 1.6 or earlier.
- Review whether public account registration is enabled.
- Check for Subscriber-level accounts not tied to trusted users.
- Review logs for unusual access to invoice or user-list functionality.
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-2026-1748 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:L/I:N/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:L/I:N/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:L/I:N/A:N
Source materials
- CVE List V5 sourceCVE List V5
- https://www.wordfence.com/threat-intel/vulnerabilities/id/79e4b7e1-9fff-4ff2-be2b-6dfa5f1ff48a?source=cveCVE reference
- https://plugins.trac.wordpress.org/browser/kirilkirkov-pdf-invoice-manager/tags/1.6/KirilKirkovWpInvoices.php#L565CVE reference
- https://plugins.trac.wordpress.org/browser/kirilkirkov-pdf-invoice-manager/tags/1.7/KirilKirkovWpInvoices.php#L565CVE 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.
Missing Authorization
Missing Authorization represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.