PDFMathTranslate through 1.9.11 SSRF via Gradio Web GUI Link Input

Advisories

PDFMathTranslate through 1.9.11 SSRF via Gradio Web GUI Link Input

severity: medium
date: 10/10/2026
Affecting: PDFMathTranslate <= 1.9.11
CVE: CVE-2026-108554
CWE: CWE-918 Server-Side Request Forgery (SSRF)
CVSS: 6.9
CVSS V4 Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N
References: GitHub Issue #1188
https://github.com/PDFMathTranslate/PDFMathTranslate
https://github.com/PDFMathTranslate/PDFMathTranslate/blob/0f0618d3303d064d97e7adb77557b21236c6cee0/pdf2zh/gui.py#L149-L179
https://github.com/PDFMathTranslate/PDFMathTranslate/blob/0f0618d3303d064d97e7adb77557b21236c6cee0/pdf2zh/gui.py#L257-L269
Credit: George Chen
Description: PDFMathTranslate (pdf2zh) through 1.9.11 contains a server-side request forgery vulnerability that allows unauthenticated attackers to make the server fetch arbitrary URLs via the Link input. The translate_file handler passes user URLs to download_with_limit without scheme or address validation, letting attackers reach internal services and cloud metadata endpoints and retrieve returned PDFs.

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