Security readout for executives and security teams
Plain-English summary
This ownCloud graphapi flaw can expose server environment variables through a phpinfo page. In containerized deployments, those variables may include admin passwords, mail credentials, and license keys. CISA lists the CVE as known exploited, so internet-facing ownCloud systems need urgent attention.
Executive priority
Treat as urgent for any ownCloud deployment. The issue can disclose credentials without authentication and is in CISA KEV. Prioritize patching, exposure validation, and secret rotation over routine maintenance.
Technical view
Affected ownCloud graphapi 0.2.x before 0.2.1 and 0.3.x before 0.3.1 includes a third-party GetPhpInfo.php component that exposes PHP configuration and webserver environment variables. Disabling graphapi alone does not remove the issue. Docker containers before February 2023 are noted as not vulnerable to credential disclosure.
Likely exposure
Highest exposure is internet-accessible ownCloud with graphapi 0.2.x or 0.3.x vulnerable versions, especially containerized deployments using environment variables for secrets. Non-containerized systems may still leak configuration details useful for follow-on attacks.
Exploitation context
CISA KEV listing supports known exploitation. The provided sources do not include attacker volume, exploitation dates, or affected organization details. The vulnerability is network-accessible and unauthenticated per CVSS, with high confidentiality, integrity, and availability impact.
Researcher notes
Evidence supports CWE-200 information exposure through phpinfo in owncloud/graphapi. The bundle names fixed version boundaries and warns disabling graphapi is insufficient. It does not provide detailed exploit telemetry or complete product CPE data.
Mitigation direction
- Update graphapi to 0.2.1, 0.3.1, or later fixed versions.
- Do not rely on disabling the graphapi app alone.
- Follow ownCloud advisory guidance for removing the exposed phpinfo component.
- Rotate potentially exposed admin, mail, and license credentials.
- Review container environment variables for exposed secrets.
Validation and detection
- Inventory ownCloud instances and graphapi app versions.
- Confirm vulnerable graphapi versions are not present.
- Verify the phpinfo exposure is no longer reachable.
- Check whether deployments store secrets in environment variables.
- Review logs for suspicious access to the exposed phpinfo endpoint.
Public sources used
Michael Williams reviewed this cited source version on .
Conservative CVE-to-ATT&CK context
These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.
ATT&CK lookup starting points
Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.
CWE-200: Information exposure and cloud metadata lookup
Information exposure and SSRF weaknesses can make discovery, cloud metadata, and credential material review relevant. Open the exact CWE lookup page first, then review the ATT&CK searches from that MITRE weakness context. This is a Glexia lookup hint, not an official ATT&CK mapping.
Open ATT&CK lookupCredential and access behavior lookup
The CVE wording references authentication or credential exposure, so valid-account and credential-access review may help. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.
Open ATT&CK lookupContainer behavior lookup
The affected technology mentions containers, so container-specific ATT&CK technique review may help. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.
Open ATT&CK lookupCVE-2023-49103 mapping review
Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.
Open ATT&CK lookup- Severity
- Critical
- CVSS
- 10 (3.1)
- Known Exploited
- Yes
- Published
Vector: CVSS:3.1/AC:L/AV:N/A:H/C:H/I:H/PR:N/S:C/UI:N
CNA and ADP enrichment extracted from CVE v5
These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.
CISA KEV status
CVSS vector scores
1 official scoreWe collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.
CVSS:3.1/AC:L/AV:N/A:H/C:H/I:H/PR:N/S:C/UI:N3.96Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
10CriticalVector: CVSS:3.1/AC:L/AV:N/A:H/C:H/I:H/PR:N/S:C/UI:N
Source materials
- CVE List V5 sourceCVE List V5
- https://owncloud.org/securityCVE reference
- https://owncloud.com/security-advisories/disclosure-of-sensitive-credentials-and-configuration-in-containerized-deployments/CVE reference
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2023-49103CVE reference · government-resource
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.
Exposure of Sensitive Information to an Unauthorized Actor
Exposure of Sensitive Information to an Unauthorized Actor represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.