Threats / ownCloud / CVE-2023-49103
CVE-2023-49103
· EUVD no mirror located
· GCVE no mirror located
Verified 2026-06-22
ownCloud graphapi vulnerability
ownCloud graphapi information disclosure vulnerability exposes sensitive data including administrative credentials through phpinfo() output via GetPhpInfo.php.
Verdict
Today item — known-exploited.
An unauthenticated attacker can access phpinfo() output through GetPhpInfo.php in ownCloud graphapi, revealing system configuration details and administrative credentials that enable further compromise of the ownCloud instance.
01
Is it exploitable?
— the evidence, ranked above the scoreExploit available
Fully weaponized — public exploit code is cataloged for this vulnerability.We link the existence of the exploit; we do not host or redistribute payloads.
Reported exploitation
794 independent public reports of in-the-wild exploitation are cataloged.Distinct reporting sources (vendor, incident response, government); open them for the underlying claims.
Exploited in the wild
Listed in the CISA Known Exploited Vulnerabilities catalog (added 2023-11-30).
Probability (EPSS)
EPSS 0.78428 — modeled likelihood of exploitation activity.EPSS is a daily-changing model output — open the source for today's value.
Severity / affected
Affected: ownCloud, ownCloud graphapi. Confirm exact fixed builds in the vendor advisory.
02
Who’s exploiting it?
— attribution turns risk into urgencyAttribution not established
No confirmed (advisory-backed) threat-actor attribution is established for this record. Absence of a named actor is not absence of compromise — see Coverage & confidence.
03
Why it matters
— the attack path, told twice: adversary, then board1
Front door — unauthenticated access narrative 1
Attacker
I discover the GetPhpInfo.php endpoint is accessible without authentication and returns phpinfo() output.
Business
Sensitive system configuration and administrative credentials are exposed to unauthenticated attackers.
2
Keys to the kingdom — privilege/identity takeover narrative 2
Attacker
I extract administrative credentials and system details from the phpinfo() output to plan further attacks.
Business
Attackers gain privileged access information needed to compromise the ownCloud instance and hosted data.
3
Lateral reach — past segmentation narrative 3
Attacker
I use the exposed credentials to authenticate as an administrator and access or modify user data and system settings.
Business
Complete compromise of ownCloud instance integrity, confidentiality, and availability of stored files and user accounts.
04
What to do
— defensible action- Remediate per the vendor advisory — confirm the fixed build for your version and verify exposure.1
Say it to the boardA vulnerability with this evidence profile is a defensible budget line, not a backlog ticket — fund the change against the proof above.
05