CVE-2025-56589

HighPublic PoC

Published: 22 January 2026

Published

22 January 2026

Modified

02 February 2026

KEV Added

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Patch

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CVSS Score 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

EPSS Score 0.0006 18.8th percentile

Risk Priority 15 60% EPSS · 20% KEV · 20% CVSS

Summary

CVE-2025-56589 is a high-severity SSRF (CWE-918) vulnerability in Apryse Html2Pdf. Its CVSS base score is 7.5 (High).

Operationally, exploitation aligns with the MITRE ATT&CK technique Exploit Public-Facing Application (T1190); ranked at the 18.8th percentile by exploit likelihood (below the median); it is not currently listed in the CISA KEV catalog; a public proof-of-concept is referenced.

Threat & Defense at a Glance

What attackers do: exploitation maps to Exploit Public-Facing Application (T1190) and 1 other technique.

Threat & Defense Details

Likely Mitigating ControlsAI

Per-CVE control mapping for this CVE has not run yet; the list below is derived from the weakness types (CWEs) cited in the NVD entry.

CA-8 Penetration Testing

addresses: CWE-918

Penetration testing attempts server-side requests to internal resources, identifying SSRF weaknesses for remediation.

SC-7 Boundary Protection

addresses: CWE-918

Outbound connections to external resources can be monitored and limited at the boundary, reducing SSRF impact.

SI-10 Information Input Validation

addresses: CWE-918

Validates server-side URLs and resource references to block SSRF attempts.

SI-4 System Monitoring

addresses: CWE-918

Detects server-side request forgery through monitoring of unexpected outbound connections.

MITRE ATT&CK Enterprise TechniquesAI

T1190 Exploit Public-Facing Application Initial Access

Adversaries may attempt to exploit a weakness in an Internet-facing host or system to initially access a network.

attack.mitre.org →

T1005 Data from Local System Collection

Adversaries may search local system sources, such as file systems, configuration files, local databases, virtual machine files, or process memory, to find files of interest and sensitive data prior to Exfiltration.

attack.mitre.org →

Why these techniques?

LFI directly enables reading arbitrary local files (T1005); the flaw in a server-side SDK component is a classic public-facing application exploit vector (T1190).

Confidence: HIGH · MITRE ATT&CK Enterprise v18.1

NVD Description

A Local File Inclusion (LFI) and a Server-Side Request Forgery (SSRF) vulnerability was found in the InsertFromHtmlString() function of the Apryse HTML2PDF SDK thru 11.6.0. These vulnerabilities could allow an attacker to read local files on the server or make…

arbitrary HTTP requests to internal or external services. Both vulnerabilities could lead to the disclosure of sensitive data or potential system takeover.

Deeper analysisAI

CVE-2025-56589 describes a Local File Inclusion (LFI) and Server-Side Request Forgery (SSRF) vulnerability in the InsertFromHtmlString() function of the Apryse HTML2PDF SDK through version 11.6.0. These flaws enable attackers to read local files on the affected server or initiate arbitrary HTTP requests to internal or external services. Published on 2026-01-22, the vulnerability carries a CVSS v3.1 base score of 7.5 (AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N) and is associated with CWE-918.

A remote, unauthenticated attacker can exploit this vulnerability over the network with low complexity and no user interaction required. Successful exploitation allows reading of local server files via LFI or forging requests via SSRF, potentially leading to sensitive data disclosure or system takeover.

Advisories and additional details are available from Apryse at http://apryse.com and Stratascale at https://www.stratascale.com/resource/apryse-server-module-ssrf-lfi/. Security practitioners should consult these resources for patch information and mitigation guidance specific to the Apryse HTML2PDF SDK.