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CVE-2025-50736 — pdf2zh

CVE-2025-50736 is a Open Redirect vulnerability in pdf2zh. The records list no fixed version yet; check the vendor advisory below and apply the mitigations in the meantime.

Byaidu PDFMathTranslate vulnerable to open redirect

Also known asPYSEC-2026-1760
Published
Updated
Affected
1 pkg
Patched
None yet
Exploits
None indexed
Exploitation data as of Nov 5, 2026 · OSV.dev, NVD, FIRST.org (EPSS)

Exploitation Status

Proof-of-concept exploit code exists

  • CISA’s SSVC triage found public proof-of-concept exploit code for this CVE, though no confirmed active exploitation.

Exploitation and automatability from CISA’s SSVC triage for CVE-2025-50736.

EPSS Exploitation Probability

via FIRST.org ↗
0.2%probability of exploitation in next 30 days
Lower Risk0.00%
Lower risk than most CVEs13th percentile — riskier than 13% of all scored CVEsHighest risk
0.00%0.24%0.48%0.73%0.0%0.2%May 26Sep 26Nov 26

Probability of exploitation in the next 30 days, from FIRST.org EPSS.

Real-World Exposure

1 pkg affected
🐍pdf2zh

Real-time download stats are indexed for npm and PyPI packages. This vulnerability affects PyPI packages — download data is not available via public APIs for these ecosystems.

Description

An open redirect vulnerability exists in Byaidu PDFMathTranslate v1.9.9 that allows attackers to craft URLs that cause the application to redirect users to arbitrary external websites via the file parameter to the /gradio_api endpoint. This vulnerability could be exploited for phishing attacks or to bypass security filters.

Affected Packages

1 total
EcosystemPackageVulnerable rangeFix
🐍PyPIpdf2zhall versionsNo fix

Detection & mitigation playbook

Open-source dependency

  1. Detect

    Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for pdf2zh, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.

  2. Remediation status

    The records we use list no patched version of pdf2zh for CVE-2025-50736. Check the maintainer's advisory, and where your build allows, override or pin the dependency away from the vulnerable range.

  3. Mitigate without a patch

    Stop reflecting attacker-controlled destinations: resolve every redirect target against an allowlist of paths or hosts you own, prefer a server-side key over a full URL in the request, and reject absolute URLs entirely where the flow only ever needs a relative one.

Frequently Asked Questions

An open redirect vulnerability exists in Byaidu PDFMathTranslate v1.9.9 that allows attackers to craft URLs that cause the application to redirect users to arbitrary external websites via the file parameter to the /gradio_api endpoint. This vulnerability could be exploited for phishing attacks or to bypass security filters.
O3 Security · Impact-Aware SCA

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CVE-2025-50736: pdf2zh Open Redirect