CVE-2026-1616

High

Published: 29 January 2026

Published

29 January 2026

Modified

10 March 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 0.0002 6.4th percentile

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

Summary

CVE-2026-1616 is a high-severity Path Traversal (CWE-22) vulnerability in Redhat Open Security Issue Management. 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 6.4th percentile by exploit likelihood (below the median); it is not currently listed in the CISA KEV catalog.

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.

SI-10 Information Input Validation

addresses: CWE-22

Validates pathnames and filenames to prevent traversal outside intended 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?

Path traversal in public-facing web app (nginx) enables remote unauthenticated file access (T1190) and direct local data disclosure (T1005).

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

NVD Description

The $uri$args concatenation in nginx configuration file present in Open Security Issue Management (OSIM) prior v2025.9.0 allows path traversal attacks via query parameters.

Deeper analysisAI

CVE-2026-1616 is a path traversal vulnerability (CWE-22) affecting Open Security Issue Management (OSIM) versions prior to v2025.9.0. The flaw arises from improper concatenation of the $uri and $args variables in the nginx configuration file, enabling attackers to manipulate query parameters to traverse directories and access unintended files.

With 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), the vulnerability is exploitable remotely over the network with low complexity, requiring no privileges or user interaction. Unauthenticated attackers can send crafted HTTP requests containing malicious query parameters to achieve directory traversal, resulting in high-impact unauthorized disclosure of confidential data without affecting integrity or availability.

The GitHub pull request at https://github.com/RedHatProductSecurity/osim/pull/615 provides the patch addressing this issue, and upgrading to OSIM v2025.9.0 or later mitigates the vulnerability.