Stirling-PDF Server-Side Request Forgery via /api/v1/convert/url/pdf WeasyPrint Subprocess
Priority MEDIUM 44CWE-918Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Information disclosure
- Confidentiality · integrity · availability
- High · None · None
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-918 and the CVSS impact.
Summary
Stirling-PDF's POST /api/v1/convert/url/pdf endpoint (ConvertWebsiteToPDF.java) was not updated with the CustomHtmlSanitizer/SsrfProtectionService SSRF protections that were added to three sibling conversion endpoints (html/pdf, file/pdf, markdown/pdf).
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00428 37th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- Yes
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| Stirling-Tools | Stirling-PDF | all versions | — | No fix listed | CNA |
- Stirling-PDF VendorStirling-Tools Affected all versions Fixed in — No fix listed CNA
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2026-71270
- 2026-10-03 Alias added: GHSA-j5rg-wh78-9f2q
References
More Stirling-Tools vulnerabilities
- TI-2025-34843 Stirling-PDF SSRF vulnerability on /api/v1/convert/markdown/pdf CVSS 3.1CRITICAL 9.8
- TI-2025-34834 Stirling-PDF SSRF vulnerability on /api/v1/convert/file/pdf CVSS 3.1CRITICAL 9.8
- TI-2025-34833 Stirling-PDF SSRF vulnerability on /api/v1/convert/html/pdf CVSS 3.1CRITICAL 9.8
- TI-2026-74445 Code injection in Stirling-PDF via H2 database import CVSS 3.1CRITICAL 9.1
- TI-2025-29281 Stirling-PDF Server-Side Request Forgery (SSRF)-Induced Arbitrary File Read Vulnerability CVSS 4.0HIGH 7.7
- TI-2026-76934 Stirling-PDF H2 SQL denylist bypass allows Java method execution CVSS 4.0HIGH 8.6
Sources
- CVE-2026-71270 · CVE Program
- CVE-2026-71270 · NVD
- FIRST EPSS
- GHSA-j5rg-wh78-9f2q · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences