# CVE-2023-31059: Repetier Server - Path Traversal

> Live exploitation tracking for CVE-2023-31059 by the CrowdSec Live Exploit Tracker, built from real-world attack data crowdsourced from CrowdSec's global network.

Page: https://tracker.crowdsec.net/cves/CVE-2023-31059

## Key facts

- **Exploitation phase:** Limited Exploitation. The vulnerability is known but shows very limited attacker interest or exploitation activity.
- **CVSS score:** 7.5
- **Public exploit available:** Yes
- **Affected products:** Repetier Server
- **Weaknesses:** CWE-22 (Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal'))
- **Tags:** web_application

## Description

Repetier Server through 1.4.10 allows ..%5c directory traversal for reading files that contain credentials, as demonstrated by connectionLost.php.

## CrowdSec analysis

[CVE-2023-31059](https://euvd.enisa.europa.eu/vulnerability/CVE-2023-31059) is a directory traversal vulnerability in Repetier Server through version 1.4.10, allowing remote attackers to read sensitive files, including those containing credentials, by exploiting crafted path sequences. This flaw could be leveraged to gain unauthorized access to confidential information, posing a significant risk to system security.

CrowdSec has been tracking this vulnerability and its exploits since 21st of January 2026.

Insights from the CrowdSec network reveal that the attackers trying to exploit CVE-2023-31059 are composed of a fairly even mix of opportunistic and targeted actors. Some attackers employ preliminary reconnaissance, while others use indiscriminate scanning.
Telemetry from the CrowdSec network also shows that exploitation activity for CVE-2023-31059 remains steady week-over-week. Attack volumes are consistent with long-term trends, indicating sustained interest from threat actors. CVE-2023-31059 continues to be an active part of the threat landscape and will likely remain this way for the forseeable future.

Attackers exploit directory traversal by sending requests to URLs containing encoded sequences like `..%5c` within the path, often targeting endpoints such as `/views..%5c.../base/connectionLost.php` to access sensitive files on Repetier Server systems.

## Timeline

- 2023-04-24: CVE Published. CVE-2023-31059 is published to NVD.
- 2026-01-21: Rule Released. CrowdSec releases a rule to detect CVE-2023-31059 exploitation attempts against the CrowdSec Network.
- 2026-02-02: CrowdSec First Seen. CrowdSec observes in-the-wild exploitation of CVE-2023-31059 for the first time.

## References

- https://www.repetier-server.com/download-repetier-server/
- https://github.com/projectdiscovery/nuclei-templates/blob/main/http/cves/2023/CVE-2023-31059.yaml

## Live exploitation data

The [Live Exploit Tracker page](https://tracker.crowdsec.net/cves/CVE-2023-31059) follows observed exploitation activity for CVE-2023-31059. [Request an API key](https://tracker.crowdsec.net/request-api-key) for full access to its exploitation timeline, attacking IP addresses and blocklists.