CVE-2023-49103
ownCloud graphapi Information Disclosure Vulnerability
- Published
- Nov 21, 2023
- Updated
- Oct 21, 2025
- Assigning CNA
- mitre
- Evidence observed
- Nov 30, 2023
Primary CVSS
nvd · CVSS 3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:HHigh · next 30 days
- Percentile
- 99.6%
- Model date
- Sep 21, 2026
EPSS is a statistical estimate, not a certainty or a measure of impact. Combine it with CVSS, KEV status, exposure and your environment.
CISA Known Exploited
This CVE appears in the CISA Known Exploited Vulnerabilities catalog.
Summary
An issue was discovered in ownCloud owncloud/graphapi 0.2.x before 0.2.1 and 0.3.x before 0.3.1. The graphapi app relies on a third-party GetPhpInfo.php library that provides a URL. When this URL is accessed, it reveals the configuration details of the PHP environment (phpinfo). This information includes all the environment variables of the webserver. In containerized deployments, these environment variables may include sensitive data such as the ownCloud admin password, mail server credentials, and license key. Simply disabling the graphapi app does not eliminate the vulnerability. Additionally, phpinfo exposes various other potentially sensitive configuration details that could be exploited by an attacker to gather information about the system. Therefore, even if ownCloud is not running in a containerized environment, this vulnerability should still be a cause for concern. Note that Docker containers from before February 2023 are not vulnerable to the credential disclosure.
Sources
3- CVE-2023-49103Scanner
Multi-threaded Python PoC scanner for CVE-2023-49103 that checks large URL lists for exposed phpinfo() output with .htaccess bypass via /.css path suffix.
Proof-of-concept exploit for CVE-2023-49103, an unauthenticated information disclosure vulnerability in ownCloud Graph API, leaking environment variables via phpinfo output.
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