CVE-2026-7315

High

Published: 28 April 2026

Published

28 April 2026

Modified

29 April 2026

KEV Added

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Patch

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CVSS Score 7.3 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L

EPSS Score 0.0006 18.7th percentile

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

Summary

CVE-2026-7315 is a high-severity Path Traversal (CWE-22) vulnerability. Its CVSS base score is 7.3 (High).

Operationally, exploitation aligns with the MITRE ATT&CK technique Exploit Public-Facing Application (T1190); ranked at the 18.7th percentile by exploit likelihood (below the median); it is not currently listed in the CISA KEV catalog.

This vulnerability is AI-related — categorised as AI Agent Protocols and Integrations; in the Protocol-Specific Risks risk domain.

The strongest mitigations our analysis identified are NIST 800-53 SI-10 (Information Input Validation) and SI-2 (Flaw Remediation).

Threat & Defense at a Glance

What attackers do: exploitation maps to Exploit Public-Facing Application (T1190) and 1 other technique. What defenders deploy: see the NIST 800-53 controls recommended below.

Threat & Defense Details

Mitigating Controls (NIST 800-53 r5)AI

SI-10 Information Input Validation good match

prevent

Directly requires validation of the filepath argument in get_pdf_path to block path traversal sequences like '../'.

SI-2 Flaw Remediation good match

prevent

Mandates identification, reporting, and correction of the specific path traversal flaw in the PDF File Handler component.

AC-3 Access Enforcement partial match

prevent

Enforces logical access controls on file system resources to restrict access outside the intended PDF directories.

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?

The remote unauthenticated path traversal in a public-facing PDF server directly enables T1190 (exploiting public-facing applications) and facilitates T1005 (reading files from the local system via filepath manipulation).

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

NVD Description

A flaw has been found in eiceblue spire-pdf-mcp-server 0.1.1. This impacts the function get_pdf_path of the file src/spire_pdf_mcp/server.py of the component PDF File Handler. Executing a manipulation of the argument filepath can lead to path traversal. The attack can be…

launched remotely. The exploit has been published and may be used. The project was informed of the problem early through an issue report but has not responded yet.

Deeper analysisAI

CVE-2026-7315 is a path traversal vulnerability (CWE-22) in eiceblue spire-pdf-mcp-server version 0.1.1, published on 2026-04-28. The issue affects the get_pdf_path function in the file src/spire_pdf_mcp/server.py within the PDF File Handler component, where manipulation of the filepath argument enables traversal outside intended directories.

The vulnerability is remotely exploitable by unauthenticated attackers with low complexity and no user interaction required, as indicated by its CVSS v3.1 base score of 7.3 (AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L). Successful exploitation allows limited impacts to confidentiality, integrity, and availability, such as reading or modifying files accessible to the server process.

Advisories note that the project was informed early via GitHub issue #1 but has not responded, with no patches or official mitigations available. An exploit has been published and may be used, as documented in VulDB entries and related references including the GitHub repository.