Severity by source
AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N
Network-accessible with no auth required; UI:R reflects attacker dependence on victim interaction; C:H covers full invoice data disclosure with no integrity or availability impact.
Primary rating from Vendor (Patchstack).
CVSS VectorVendor: Patchstack
Lifecycle Timeline
1DescriptionCVE.org
Unauthenticated Sensitive Data Exposure in PeproDev Ultimate Invoice <= 2.2.6 versions.
AnalysisAI
Sensitive data exposure in PeproDev Ultimate Invoice (WordPress plugin, versions ≤ 2.2.6) allows unauthenticated remote attackers to access confidential invoice data - including likely customer PII and financial records - without authentication, contingent on some user interaction (CVSS UI:R). The root cause (CWE-201) is the inclusion of sensitive information in plugin-generated output or endpoint responses that lack proper access control. No public exploit code has been identified at time of analysis, and the vulnerability is not listed in the CISA KEV catalog.
Technical ContextAI
PeproDev Ultimate Invoice is a WordPress plugin (CPE: cpe:2.3:a:pepro_dev._group:peprodev_ultimate_invoice:*:*:*:*:*:*:*:*) used to generate and manage invoices within WordPress environments. CWE-201 (Insertion of Sensitive Information Into Sent Data) describes a root cause where the application inadvertently embeds sensitive data - such as customer names, addresses, payment terms, or financial figures - in HTTP responses, document URLs, or API output that are accessible without authentication. For invoice plugins this typically manifests as predictable or publicly accessible invoice preview/download endpoints that return full document contents without verifying the requester's identity or authorization to view the document.
RemediationAI
Update the PeproDev Ultimate Invoice plugin to the version released after 2.2.6 via the WordPress plugin dashboard or the plugin vendor's distribution channel; a fixed version beyond 2.2.6 is implied by the advisory scope but an exact patched release number was not provided in available data - verify the current available version via the WordPress plugin repository or the Patchstack advisory at https://patchstack.com/database/wordpress/plugin/pepro-ultimate-invoice/vulnerability/wordpress-peprodev-ultimate-invoice-plugin-2-2-6-sensitive-data-exposure-vulnerability before updating. If an update is not immediately available, consider temporarily deactivating the plugin to prevent data exposure, accepting the trade-off of losing invoicing functionality. Additionally, implement web application firewall rules to block unauthenticated access to invoice preview or download endpoints, and audit web server logs for unusual unauthenticated access patterns to invoice-related URLs.
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Same technique Information Disclosure
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External POC / Exploit Code
Leaving vuln.today
EUVD-2026-48153
GHSA-q265-wj3h-mqcc