CVE-2026-108554: PDFMathTranslate through 1.9.11 SSRF via Gradio Web GUI Link Input

Severity: medium (CVSS 5.3 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.3% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2026-10-10 · updated 2026-10-16
Weakness: CWE-918

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.

Affected products

PDFMathTranslate: through 1.9.11

References

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
https://github.com/PDFMathTranslate/PDFMathTranslate/issues/1188
https://www.vulncheck.com/advisories/pdfmathtranslate-through-1.9.11-ssrf-via-gradio-web-gui-link-input
https://github.com/PDFMathTranslate/PDFMathTranslate/issues/1188

Get alerted when CVE-2026-108554 or the next vulnerability affects your stack