Path Traversal in Cnblogs Pdfpatcher
CVE-2025-63918
PDFPatcher executable does not validate user-supplied file paths, allowing directory traversal attacks allowing attackers to upload arbitrary files to arbitrary locations.
Vulnerability class: Path Traversal (Directory Traversal)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 6.2 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N.
EPSS exploit prediction
EPSS: 0.004 (31.8th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 32nd percentile — 31.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.004 · newest: 0.004 · change: 0.000
Affected products
Weakness classification (CWE)
References
- www.cnblogs.com/pdfpatcher (Product)
- github.com/wmjordan/PDFPatcher (Product)
- github.com/cydtseng/Vulnerability-Research/blob/main/pdfpatcher/DirectoryTraver… (Exploit, Third Party Advisory)
Frequently asked questions
- What is CVE-2025-63918?
- CVE-2025-63918 is a medium-severity vulnerability in Cnblogs Pdfpatcher, classified under Path Traversal. CVSS score: 6.2/10. Published 2025-11-17.
- How severe is CVE-2025-63918?
- Medium severity. CVSS v3 base score is 6.2 out of 10.