CVE-2026-18597Network attack vector

Internal information disclosure via redirect-based SSRF

Published Aug 6, 2026 · Updated Aug 6, 2026

SSRF in Foxit PDF Services API before 2026-07-27 allows remote authenticated users to disclose internal server information. The PDF creation path accepts external file URLs but fails to revalidate a target reached through an HTTP redirect, allowing validation to be bypassed. Valid API credentials and a crafted redirect are required; the resulting blind server-side request exposes information about the service's internal server.

CVSS severity8.5
High
EPSS probability0.18%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

SSRF in Foxit PDF Services API before 2026-07-27 allows remote authenticated users to disclose internal server information. The PDF creation path accepts external file URLs but fails to revalidate a target reached through an HTTP redirect, allowing validation to be bypassed. Valid API credentials and a crafted redirect are required; the resulting blind server-side request exposes information about the service's internal server.

The record

CVE
CVE-2026-18597
Published
Aug 6, 2026
Updated
Aug 6, 2026
Vendor
Foxit Software
Product
Foxit PDF Services API
Classifications
CWE-918, CAPEC-664, T1190
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Aug 6, 2026CVE publishedPublication date reported by the CVE source.
  2. Aug 6, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=before 2026-07-27

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Foxit Software · Foxit PDF Services APIversion=before 2026-07-27

Published CVSS scores

8.5Foxit Software Inc.CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:L/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-918Server-Side Request Forgery (SSRF)
CAPEC-664Server Side Request Forgery
T1190Exploit Public-Facing Application

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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