{"id":"CVE-2023-49103","published":"2023-11-21T22:15:08Z","modified":"2026-06-17T06:35:22Z","title":"ownCloud graphapi Information Disclosure Vulnerability","vendor":"ownCloud","product":"ownCloud graphapi","tier":"core","eol":null,"description":{"text":"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.","provenance":"source","from":"NVD"},"summary":{"text":"The ownCloud graphapi app (versions 0.2.x before 0.2.1 and 0.3.x before 0.3.1) bundles a third-party GetPhpInfo.php library that, when its URL is reached, exposes the PHP environment configuration (phpinfo), including all webserver environment variables. An unauthenticated remote attacker can reach this endpoint over the network without user interaction, and simply disabling the graphapi app does not remove the exposure.","provenance":"ai","model":"claude-haiku-5-5","generatedAt":"2026-10-23T07:13:15Z"},"cvss":{"score":7.5,"severity":"HIGH","version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N","provenance":"source","from":"NVD"},"epss":{"score":0.77755,"percentile":0.99568,"date":"2026-10-29","provenance":"source"},"kev":{"dateAdded":"2023-11-30","dueDate":"2023-12-21","ransomware":false,"requiredAction":"Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.","notes":"https://owncloud.com/security-advisories/disclosure-of-sensitive-credentials-and-configuration-in-containerized-deployments/ ;  https://nvd.nist.gov/vuln/detail/CVE-2023-49103","provenance":"source"},"vulncheckKev":{"dateAdded":"2023-11-27","exploitedFirstSeen":"2023-11-27","ransomware":false,"evidence":[{"url":"https://www.greynoise.io/blog/cve-2023-49103-owncloud-critical-vulnerability-quickly-exploited-in-the-wild","date":"2023-11-27"},{"url":"https://dashboard.shadowserver.org/statistics/honeypot/vulnerability/map/?day=2023-11-28&host_type=src&vulnerability=cve-2023-49103","date":"2023-11-28"},{"url":"https://dashboard.shadowserver.org/statistics/honeypot/vulnerability/map/?day=2023-11-29&host_type=src&vulnerability=cve-2023-49103","date":"2023-11-29"},{"url":"https://dashboard.shadowserver.org/statistics/honeypot/vulnerability/map/?day=2023-11-30&host_type=src&vulnerability=cve-2023-49103","date":"2023-11-30"},{"url":"https://www.cisa.gov/sites/default/files/feeds/known_exploited_vulnerabilities.json","date":"2023-11-30"},{"url":"https://dashboard.shadowserver.org/statistics/honeypot/vulnerability/map/?day=2023-12-03&host_type=src&vulnerability=cve-2023-49103","date":"2023-12-03"},{"url":"https://dashboard.shadowserver.org/statistics/honeypot/vulnerability/map/?day=2023-12-04&host_type=src&vulnerability=cve-2023-49103","date":"2023-12-04"},{"url":"https://dashboard.shadowserver.org/statistics/honeypot/vulnerability/map/?day=2023-12-05&host_type=src&vulnerability=cve-2023-49103","date":"2023-12-05"},{"url":"https://dashboard.shadowserver.org/statistics/honeypot/vulnerability/map/?day=2023-12-06&host_type=src&vulnerability=cve-2023-49103","date":"2023-12-06"},{"url":"https://dashboard.shadowserver.org/statistics/honeypot/vulnerability/map/?day=2023-12-07&host_type=src&vulnerability=cve-2023-49103","date":"2023-12-07"}],"evidenceTotal":887,"provenance":"source"},"exploited":true,"otx":{"pulseCount":50,"pulses":[{"name":"Actively_Exploited_Kev | Oct 30, 2026","url":"https://otx.alienvault.com/pulse/6ae35d889ea92b4ce19c2680","created":"2026-10-29"},{"name":"Actively_Exploited_Kev | Oct 29, 2026","url":"https://otx.alienvault.com/pulse/6ae20c1db17e7057ae7d9ad1","created":"2026-10-28"},{"name":"Actively_Exploited_Kev | Oct 28, 2026","url":"https://otx.alienvault.com/pulse/6ae0ba7e0e2a97ff7b218819","created":"2026-10-27"},{"name":"Actively_Exploited_Kev | Oct 27, 2026","url":"https://otx.alienvault.com/pulse/6adf68b85c3e852f3c111d18","created":"2026-10-26"},{"name":"Actively_Exploited_Kev | Oct 24, 2026","url":"https://otx.alienvault.com/pulse/6adb740e397c3ad4799aa4cd","created":"2026-10-23"},{"name":"Actively_Exploited_Kev | Oct 23, 2026","url":"https://otx.alienvault.com/pulse/6ada236fcfba2dfa730ea482","created":"2026-10-22"},{"name":"Actively_Exploited_Kev | Oct 22, 2026","url":"https://otx.alienvault.com/pulse/6ad8d33a077cbb5cab524d80","created":"2026-10-21"},{"name":"Actively_Exploited_Kev | Oct 21, 2026","url":"https://otx.alienvault.com/pulse/6ad78130c4d1ac2be83a8b6d","created":"2026-10-20"},{"name":"Actively_Exploited_Kev | Oct 20, 2026","url":"https://otx.alienvault.com/pulse/6ad62f63c24a405a3423cc13","created":"2026-10-19"},{"name":"Actively_Exploited_Kev | Oct 19, 2026","url":"https://otx.alienvault.com/pulse/6ad4dda174e5797d0bd238b7","created":"2026-10-18"}],"provenance":"machine"},"cwes":[{"id":"CWE-200","name":"Exposure of Sensitive Information to an Unauthorized Actor"}],"references":[{"url":"https://owncloud.com/security-advisories/disclosure-of-sensitive-credentials-and-configuration-in-containerized-deployments/","tags":["Vendor Advisory"]},{"url":"https://owncloud.org/security","tags":["Product"]},{"url":"https://owncloud.com/security-advisories/disclosure-of-sensitive-credentials-and-configuration-in-containerized-deployments/","tags":["Vendor Advisory"]},{"url":"https://owncloud.org/security","tags":["Product"]},{"url":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2023-49103","tags":["US Government Resource"]}],"techniques":[{"id":"T1190","name":"Exploit Public-Facing Application","tactics":["initial-access"],"provenance":"source","basis":"ctid-kev","bases":["ctid-kev"],"basisDetail":"CTID Mappings Explorer KEV 07/28/2025 (ATT&CK 16.1); capability: Improper Access Control","mappingType":"exploitation_technique","evidence":[],"comment":"This vulnerability is exploited through an unauthenticated information disclosure flaw in the Graph API extension of ownCloud. Attackers first used this vulnerability to gain initial access by targeting the /apps/graphapi/vendor/microsoft/microsoft-graph/tests/GetPhpInfo.php endpoint, which allowed them to leak sensitive information via the PHP function phpinfo. By modifying the requested URI to bypass Apache web server rewrite rules, attackers could access environment variables containing secrets, such as usernames, passwords, and license keys.","confidence":"high"},{"id":"T1005","name":"Data from Local System","tactics":["collection"],"provenance":"source","basis":"ctid-kev","bases":["ctid-kev"],"basisDetail":"CTID Mappings Explorer KEV 07/28/2025 (ATT&CK 16.1); capability: Improper Access Control","mappingType":"primary_impact","evidence":[],"comment":"This vulnerability is exploited through an unauthenticated information disclosure flaw in the Graph API extension of ownCloud. Attackers first used this vulnerability to gain initial access by targeting the /apps/graphapi/vendor/microsoft/microsoft-graph/tests/GetPhpInfo.php endpoint, which allowed them to leak sensitive information via the PHP function phpinfo. By modifying the requested URI to bypass Apache web server rewrite rules, attackers could access environment variables containing secrets, such as usernames, passwords, and license keys.","confidence":"high"},{"id":"T1552","name":"Unsecured Credentials","tactics":["credential-access"],"provenance":"source","basis":"ctid-kev","bases":["ctid-kev"],"basisDetail":"CTID Mappings Explorer KEV 07/28/2025 (ATT&CK 16.1); capability: Improper Access Control","mappingType":"primary_impact","evidence":[],"comment":"This vulnerability is exploited through an unauthenticated information disclosure flaw in the Graph API extension of ownCloud. Attackers first used this vulnerability to gain initial access by targeting the /apps/graphapi/vendor/microsoft/microsoft-graph/tests/GetPhpInfo.php endpoint, which allowed them to leak sensitive information via the PHP function phpinfo. By modifying the requested URI to bypass Apache web server rewrite rules, attackers could access environment variables containing secrets, such as usernames, passwords, and license keys.","confidence":"high"}],"reports":[],"affected":[],"advisories":[],"euvd":{"id":"EUVD-2023-53112","url":"https://euvd.enisa.europa.eu/vulnerability/EUVD-2023-53112","exploited":true,"exploitedSince":"2023-11-30","provenance":"source"},"exploits":[],"exploitSources":{"pocGithub":{"count":3,"skipped":0,"earliest":"2023-11-22","earliestUrl":"https://github.com/creacitysec/CVE-2023-49103","repos":[{"name":"creacitysec/CVE-2023-49103","url":"https://github.com/creacitysec/CVE-2023-49103","stars":30,"created":"2023-11-22"},{"name":"merlin-ke/OwnCloud-CVE-2023-49103","url":"https://github.com/merlin-ke/OwnCloud-CVE-2023-49103","stars":1,"created":"2023-12-19"},{"name":"d0rb/CVE-2023-49103","url":"https://github.com/d0rb/CVE-2023-49103","stars":0,"created":"2024-06-27"}]},"metasploit":[{"name":"ownCloud Phpinfo Reader","module":"auxiliary/gather/owncloud_phpinfo_reader","type":"auxiliary","disclosureDate":"2023-11-21","url":"https://github.com/rapid7/metasploit-framework/blob/master/modules/auxiliary/gather/owncloud_phpinfo_reader.rb"}],"nuclei":[{"id":"CVE-2023-49103","name":"OwnCloud - Phpinfo Configuration","severity":"high","path":"http/cves/2023/CVE-2023-49103.yaml","url":"https://github.com/projectdiscovery/nuclei-templates/blob/main/http/cves/2023/CVE-2023-49103.yaml"}],"first":{"date":"2023-11-21","source":"Metasploit","url":"https://github.com/rapid7/metasploit-framework/blob/master/modules/auxiliary/gather/owncloud_phpinfo_reader.rb"},"provenance":"source"},"exploitRefs":[],"flow":[{"stage":"exploitation","techniques":["T1190"],"provenance":"source"},{"stage":"primary","techniques":["T1552","T1005"],"provenance":"source"}],"timeline":[{"date":"2023-11-21","kind":"published","label":"Published (NVD)","url":"https://nvd.nist.gov/vuln/detail/CVE-2023-49103","provenance":"source"},{"date":"2023-11-21","kind":"exploit-public","label":"First public exploit: Metasploit; later: PoC-in-GitHub 2023-11-22","url":"https://github.com/rapid7/metasploit-framework/blob/master/modules/auxiliary/gather/owncloud_phpinfo_reader.rb","provenance":"source"},{"date":"2023-11-27","kind":"exploited-reported","label":"Exploitation first reported (VulnCheck KEV evidence)","url":"https://www.greynoise.io/blog/cve-2023-49103-owncloud-critical-vulnerability-quickly-exploited-in-the-wild","provenance":"source"},{"date":"2023-11-30","kind":"kev","label":"Added to CISA KEV","url":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","provenance":"source"},{"date":"2023-11-30","kind":"euvd-exploited","label":"ENISA EUVD: exploited","url":"https://euvd.enisa.europa.eu/vulnerability/EUVD-2023-53112","provenance":"source"}],"speed":{"daysToPublicExploit":0,"firstExploitFrom":"Metasploit","daysToKev":9},"priority":{"score":68.2,"factors":[{"name":"In a KEV catalog","points":35.0,"detail":"listed in CISA KEV and VulnCheck KEV"},{"name":"Recent KEV listing","points":0.0,"detail":"added 1068 days ago"},{"name":"Known ransomware use","points":0.0,"detail":"not known"},{"name":"EPSS percentile","points":19.91,"detail":"percentile 0.9957"},{"name":"Named in threat reports","points":0.0,"detail":"0 reports"},{"name":"Public exploit code","points":5.0,"detail":"3 PoC-in-GitHub repos; 1 Metasploit module; 1 nuclei template"},{"name":"Mentioned in OTX pulses","points":3.0,"detail":"50 pulses"},{"name":"CVSS severity","points":5.25,"detail":"base score 7.5"},{"name":"End-of-life product","points":0.0,"detail":"supported or unknown"}]},"lineage":{"familyId":"fam-owncloud-graphapi-cve-2023-49103","children":[{"from":"CVE-2023-49103","to":"CVE-2023-49283","relation":"related","confidence":"high","kind":"lineage","evidence":[{"kind":"osv-related","provenance":"source","id":"GHSA-mhhp-c3cm-2r86","via":"reference","url":"https://nvd.nist.gov/vuln/detail/CVE-2023-49103"}]}]}}