Answer in brief
CVE-2026-18027 records a Medium severity (CVSS 6.5) vulnerability in WebToffee WooCommerce PDF Invoices, Packing Slips, Delivery Notes & Shipping Labels <= 4.9.8 - Authenticated (Subscriber+) Arbitrary File Read via 'customer_note' Parameter. The current sources do not mark it as known exploited. The current feed maps webtoffee/WebToffee WooCommerce PDF Invoices, Packing Slips, Delivery Notes & Shipping Labels (generic), webtoffee/WebToffee WooCommerce PDF Invoices, Packing Slips, Delivery Notes & Shipping Labels (generic). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
CVSS is 6.5. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps webtoffee/WebToffee WooCommerce PDF Invoices, Packing Slips, Delivery Notes & Shipping Labels (generic), webtoffee/WebToffee WooCommerce PDF Invoices, Packing Slips, Delivery Notes & Shipping Labels (generic). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| webtoffee/WebToffee WooCommerce PDF Invoices, Packing Slips, Delivery Notes & Shipping Labelsgeneric | >=0 <=4.9.8 | Not reported |
| webtoffee/WebToffee WooCommerce PDF Invoices, Packing Slips, Delivery Notes & Shipping Labelsgeneric | 0 | Not reported |
Published upstream
Aug 22, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Aug 24, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Aug 22, 2026
The WebToffee WooCommerce PDF Invoices, Packing Slips, Delivery Notes & Shipping Labels plugin for WordPress is vulnerable to Directory Traversal in all versions up to, and including, 4.9.8 via the get_image_src_in_base64 function. This makes it possible for authenticated attackers, with subscriber-level access and above, to read the contents of arbitrary files on the server, which can contain sensitive information. The base64-encoded file contents are embedded into the cached invoice HTML and served directly to the attacker via the plugin's own Print/Download invoice endpoints, which require only a valid nonce and access key.
Quoted source text, attributed separately from HOL analysis.