CVE-2025-63917
High
Description
PDFPatcher thru 1.1.3.4663 executable's XML bookmark import functionality does not restrict XML external entity (XXE) references. The application uses .NET's XmlDocument class without disabling external entity resolution, enabling attackers to: Read arbitrary files from the victim's filesystem, exfiltrate sensitive data via out-of-band (OOB) HTTP requests, perform SSRF attacks against internal network resources, or cause a denial of service via entity expansion attacks.
SeverityHigh
CVSS7.1
Exploit probability—
ProductCnblogs Pdfpatcher
PublishedNov 17, 2025
First seenNov 17, 2025
Weakness typeCWE-611XML external entity (XXE)
How to fix
Sources list no fixed version or patch link for this vulnerability.
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| cnblogs pdfpatcher | v ≤ 1.1.3.4663 | — |
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