CVE-2026-5936: Server-Side Request Forgery (SSRF) via URL Parameter in Foxit PDF Services API

Severity: critical (CVSS 9.8 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.2% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2026-04-13 · updated 2026-10-26
Weakness: CWE-918

Description

An attacker can control a server-side HTTP request by supplying a crafted URL, causing the server to initiate requests to arbitrary destinations. This behavior may be exploited to probe internal network services, access otherwise unreachable endpoints (e.g., cloud metadata services), or bypass network access controls, potentially leading to sensitive information disclosure and further compromise of the internal environment.

Affected products

Foxit Software Inc. Foxit PDF Services API: before 2026-04-07 — fixed in 2026-04-07

How to fix

Upgrade to a fixed version: Foxit Software Inc. Foxit PDF Services API 2026-04-07. Check the vendor advisory for mitigations.

References

https://www.foxit.com/support/security-bulletins.html

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