What is CVE-2026-34071?

CVE-2026-34071 is a medium-severity vulnerability in Stirling Stirling_pdf, classified under Cross-site Scripting. CVSS score: 5.4/10. Published 2026-03-26.

How severe is CVE-2026-34071?

Medium severity. CVSS v3 base score is 5.4 out of 10.

XSS in Stirling Stirling_pdf

CVE-2026-34071

Stirling-PDF is a locally hosted web application that allows you to perform various operations on PDF files. In version 2.7.3, the /api/v1/convert/eml/pdf endpoint with parameter downloadHtml=true returns unsanitized HTML from the email bo…

Vulnerability class: XSS (Cross-Site Scripting)

EPSS: 0.000 (6.0th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 5.4 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N.

Affected products

Stirling Stirling_pdf — versions 2.7.3
Stirling-tools Stirling-pdf — versions = 2.7.3

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

References

security-advisories@github.com (x_refsource_CONFIRM, Exploit, Vendor Advisory)

Frequently asked questions

What is CVE-2026-34071?: CVE-2026-34071 is a medium-severity vulnerability in Stirling Stirling_pdf, classified under Cross-site Scripting. CVSS score: 5.4/10. Published 2026-03-26.
How severe is CVE-2026-34071?: Medium severity. CVSS v3 base score is 5.4 out of 10.