---
title: "CVE-2023-49103: ownCloud graphapi Information Disclosure Vulnerability"
url: https://erroneo.us/security/cve/CVE-2023-49103/
description: "CVE-2023-49103 (ownCloud ownCloud graphapi): Exploited in the wild (CISA KEV). An issue was discovered in ownCloud owncloud/graphapi 0.2.x before 0.2.1 and…"
type: vulnerability-record
section: "Security Digest"
date_published: 2023-11-21
date_modified: 2025-10-21
publisher: erroneo.us
author: erroneo.us Security Desk
cve: "CVE-2023-49103"
kev: true
cvss: 10
epss: 0.78428
license: All rights reserved. Quote with attribution and a link.
---

# CVE-2023-49103: ownCloud graphapi Information Disclosure Vulnerability

**Signal:** Exploited: patch now if you run it. CISA has confirmed exploitation in the wild. (Computed from CISA KEV, EPSS and CVSS; not an editorial verdict.)

## Should you act?

- Yes, if you run ownCloud ownCloud graphapi. CISA added this CVE to its Known Exploited Vulnerabilities catalog on 2023-11-30, which means there is reliable evidence of exploitation in the wild. US federal agencies must remediate by 2023-12-21 ; treat that as the outer limit, not the target.
- EPSS 78.4% , percentile 99.6: FIRST’s model estimates a 78.4% chance of exploitation activity in the next 30 days, higher than 99.6% of all scored CVEs (very high). EPSS is a probability, not a verdict.
- Remotely reachable with no login and no user interaction. If the vulnerable service is exposed to the internet, prioritize it.

## What it is

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.

## Affected products (CVE record)

- n/a n/a: see advisory

## Severity

- mitre CVSS 3.1: 10 `CVSS:3.1/AC:L/AV:N/A:H/C:H/I:H/PR:N/S:C/UI:N`

## Exploitation

- CISA KEV: added 2023-11-30; federal due date 2023-12-21. Known ransomware use: Unknown.
- CISA required action: Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.
- CISA SSVC assessment: exploitation active , automatable yes , technical impact partial .
- FIRST EPSS (model of 2026-10-21): 78.43% probability of exploitation activity in the next 30 days; percentile 99.6.

## Sources

- [Listed in CISA KEV notes (owncloud.com)](https://owncloud.com/security-advisories/disclosure-of-sensitive-credentials-and-configuration-in-containerized-deployments/)
- [CVE.org record CVE-2023-49103](https://www.cve.org/CVERecord?id=CVE-2023-49103)
- [NVD entry CVE-2023-49103](https://nvd.nist.gov/vuln/detail/CVE-2023-49103)
- [CISA Known Exploited Vulnerabilities catalog entry](https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2023-49103)
- [owncloud.org](https://owncloud.org/security)

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Source page: https://erroneo.us/security/cve/CVE-2023-49103/ · Security Digest: https://erroneo.us/security/ · More: https://erroneo.us/llms.txt