vulnerability / NVI-00015421 / Revision 1
PDFME has SSRF via Unvalidated URL Fetch in `getB64BasePdf` When `basePdf` Is Attacker-Controlled
OSV carries this publisher advisory for @pdfme/common. This is an aggregated source copy; consult the original publisher and compare update dates.
This report has not inspected your inventory, configuration, deployed build, reachability or evidence. A catalog listing and a severity score do not establish exposure or compromise.
01 / Meaning
Why it matters
Published affected context helps an owner decide what evidence to gather. This report has not examined your application.
02 / Applicability
The affected context
Affected versions, configuration prerequisites and known exclusions are public. Confirm each one against the deployed service.
@pdfme/common
source listedSEMVER: introduced 0; fixed 5.5.10
## Summary The `getB64BasePdf` function in `@pdfme/common` fetches arbitrary URLs via `fetch()` without any validation when `basePdf` is a non-data-URI string and `window` is defined. An attacker who can control the `basePdf` field of a template (e.g., through a web application that accepts user-supplied templates) can force the server or client to make requests to arbitrary internal or external endpoints, enabling Server-Side Request Forgery (SSRF) in SSR contexts or blind request forgery in browser contexts. ## Details The vulnerability exists in `packages/common/src/helper.ts:130-141`. When `getB64BasePdf` receives a string that does not start with `data:application/pdf;`, and `window` is defined, it passes the string directly to `fetch()`: ```typescript // packages/common/src/helper.ts:130-141 export const getB64BasePdf = async ( customPdf: ArrayBuffer | Uint8Array | string, ): Promise => { if ( typeof customPdf === 'string' && !customPdf.startsWith('data:application/pdf;') && typeof window !== 'undefined' ) { const response = await fetch(customPdf); // <-- No URL validation const blob = await response.blob(); return blob2Base64Pdf(blo
03 / Response
What to do next
- vendor patch
The original advisory lists fixed boundaries 5.5.10 for @pdfme/common. Confirm the publisher’s latest guidance.
Confirm current vendor support, compatibility and deployment evidence. This report has not tested a fix in your system. GitHub Advisory Database via OSV
A fixed release is not deployment evidence.
Check current vendor support and compatibility. After making a change, verify the deployed build and relevant runtime conditions. Keep the evidence, owner and time. An updated lockfile alone does not prove what is running.
04 / Limits
What this report cannot establish
- Customer inventory, deployment, reachability and exploitation have not been inspected.
05 / Provenance
Sources you can inspect
Each assertion retains its source. Mirrored records may repeat one underlying publisher; additional links are not independent corroboration.
- GHSA-pgx6-7jcq-2qff ↗
GitHub Advisory Database via OSV · vendor advisory
Observed . GitHub-origin advisory, CC-BY-4.0; OSV is an aggregate copy, not independent corroboration.
Public revision history
Only published revisions appear here. Routine fetches do not create a material-change event.
- Revision 1 ·
First indexed by Null; source disclosure date is shown separately.