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Vulnerability record · CVE-2025-63917 · published 17 November 2025

CVE-2025-63917: Cnblogs pdfpatcher xml external entity (xxe) vulnerability

Cnblogs · Pdfpatcher

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.

7.1 CVSS 3.1 High EPSS 0.40% · top 68.8% CWE-611 · XML external entity (XXE)
7.1CVSS 3.1 base score
0.40%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
3References, 1 tagged exploit
17 Jun 2026Last modified by NVD

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.

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:L

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://github.com/cydtseng/Vulnerability-Research/blob/main/pdfpatcher/XXE-Importers.md ExploitThird Party Advisory
https://github.com/wmjordan/PDFPatcher Product
https://www.cnblogs.com/pdfpatcher Product

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

6.2CVE-2025-63918Cnblogs pdfpatcher path traversal vulnerabilityPDFPatcher executable does not validate user-supplied file paths, allowing directory traversal attacks allowing attackers to upload arbitrary files t…EPSS 0.40%9.8CVE-2025-58360GeoServer WMS GetMap XXE allows unauthenticated file read and SSRFGeoServer versions 2.26.0 through 2.26.2 and before 2.25.6 accept XML input at the /geoserver/wms GetMap endpoint without sufficiently restricting ex…KEVEPSS 61%analysed9.8CVE-2025-2776SysAid On-Prem unauthenticated XXE in Server URL processingSysAid On-Prem versions up to 23.3.40 process the Server URL without restricting XML external entities, so an unauthenticated attacker can supply cra…KEVEPSS 64%analysed7.5CVE-2025-2775SysAid On-Prem unauthenticated XXE in Checkin processingSysAid On-Prem versions up to 23.3.40 process Checkin XML without restricting external entities, so an unauthenticated attacker can supply a crafted …KEVEPSS 43%analysed7.5CVE-2023-45727Proself XXE flaw allows unauthenticated file readProself Enterprise/Standard, Gateway, and Mail Sanitize editions fail to restrict XML external entities when parsing malformed XML requests. A remote…KEVEPSS 3.5%analysed9.8CVE-2024-34102Adobe Commerce and Magento XXE flaw allows unauthenticated code executionAdobe Commerce and Magento Open Source are affected by an improper restriction of XML external entity reference (XXE) vulnerability. A crafted XML do…KEVEPSS 100%analysed9.8CVE-2019-9670Zimbra mailboxd Autodiscover XXE allows unauthenticated compromiseThe mailboxd component in Synacor Zimbra Collaboration Suite 8.7.x before 8.7.11p10 parses XML in the Autodiscover servlet without restricting extern…KEVEPSS 100%analysed7.5CVE-2019-13608Citrix StoreFront Server XXE allows unauthenticated file disclosureCitrix StoreFront Server before 1903, 7.15 LTSR before CU4 (3.12.4000), and 7.6 LTSR before CU8 (3.0.8000) is vulnerable to XML External Entity (XXE)…KEVEPSS 30%analysed

Source: NIST National Vulnerability Database (record CVE-2025-63917), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.