CVE-2023-49103

CVE-2023-49103 is a critical-severity vulnerability in Owncloud Graph Api with a CVSS 3.x base score of 10.0. It is listed in CISA's Known Exploited Vulnerabilities (KEV) catalog, confirming it has been exploited in the wild (added 2023-11-30). The underlying weakness is classified as CWE-200.

Key facts

Description

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.

Frequently asked questions

What is CVE-2023-49103?
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.
How severe is CVE-2023-49103?
CVE-2023-49103 has a CVSS 3.x base score of 10.0, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2023-49103 being actively exploited?
Yes. CVE-2023-49103 is on CISA's Known Exploited Vulnerabilities (KEV) catalog, added on 2023-11-30, which means active exploitation has been confirmed. It should be prioritised for remediation.
What products are affected by CVE-2023-49103?
CVE-2023-49103 primarily affects Owncloud Graph Api. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2023-49103?
Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Because this CVE is known to be actively exploited, treat remediation as urgent — CISA KEV typically sets a short remediation deadline.
Does CVE-2023-49103 have an EU (EUVD) identifier?
Yes. CVE-2023-49103 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2023-53112. It is also flagged as exploited in the EUVD (since 2023-11-30).
When was CVE-2023-49103 published?
CVE-2023-49103 was published on 2023-11-21 and last updated on 2026-06-17.

References

Affected products (2)

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