CVE-2026-25575

Unknown Unknown - Not Provided

Path Traversal in NavigaTUM propose_edits Allows File Overwrite

Publication date: 2026-02-04

Last updated on: 2026-02-11

Assigner: GitHub, Inc.

Description

NavigaTUM is a website and API to search for rooms, buildings and other places. Prior to commit 86f34c7, there is a path traversal vulnerability in the propose_edits endpoint allows unauthenticated users to overwrite files in directories writable by the application user (e.g., /cdn). By supplying unsanitized file keys containing traversal sequences (e.g., ../../) in the JSON payload, an attacker can escape the intended temporary directory and replace public facing images or fill the server's storage. This issue has been patched via commit 86f34c7.

CVSS Scores

EPSS Scores

Probability:
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Meta Information

Published

2026-02-04

Last Modified

2026-02-11

Generated

2026-07-06

AI Q&A

2026-02-05

EPSS Evaluated

2026-07-05

NVD

CVE-2026-25575

EUVD

EUVD-2026-5325

Affected Vendors & Products

Vendor	Product	Version / Range
tum	navigatum	to 2026-02-03 (exc)

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-26	The product uses external input to construct a pathname that should be within a restricted directory, but it does not properly neutralize "/dir/../filename" sequences that can resolve to a location that is outside of that directory.
CWE-23	The product uses external input to construct a pathname that should be within a restricted directory, but it does not properly neutralize sequences such as ".." that can resolve to a location that is outside of that directory.
CWE-22	The product uses external input to construct a pathname that is intended to identify a file or directory that is located underneath a restricted parent directory, but the product does not properly neutralize special elements within the pathname that can cause the pathname to resolve to a location that is outside of the restricted directory.

Attack-Flow Graph

Executive Summary

The vulnerability is a path traversal issue in the propose_edits endpoint of the NavigaTUM website and API. It allows unauthenticated users to overwrite files in directories writable by the application user by supplying unsanitized file keys containing traversal sequences like "../../" in the JSON payload. This enables attackers to escape the intended temporary directory and replace public-facing images or fill the server's storage.

Impact Analysis

This vulnerability can allow attackers to overwrite important files in writable directories, potentially replacing public-facing images or filling the server's storage. This can lead to defacement of the website, denial of service due to storage exhaustion, or other malicious impacts on the availability and integrity of the application.

Compliance Impact

I don't know

Detection Guidance

I don't know

Mitigation Strategies

The vulnerability has been patched via commit 86f34c7. Immediate steps to mitigate this vulnerability include updating the NavigaTUM application to include this patch.

Additionally, restricting write permissions on directories writable by the application user (such as /cdn) can help reduce the risk of exploitation.

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