Hazard

Is CVE-2023-49103 being exploited?

Weaponised and widely attempted

Reliable public exploit code exists, or mass exploitation attempts are probable. Patch inside days, not weeks.

ownCloud graphapi Information Disclosure Vulnerability

ownCloud · ownCloud graphapi

CVSS 10 EPSS 78% no public exploit indexed Fix deadline passed 21 December 2023

What it is

ownCloud graphapi contains an information disclosure vulnerability that can reveal sensitive data stored in phpinfo() via GetPhpInfo.php, including administrative credentials.

Why we say that

  • EPSS puts exploitation in the next 30 days at 78%
  • CISA's federal remediation deadline (2023-12-21) has passed
  • CVSS 10 critical
  • Listed in the CISA Known Exploited Vulnerabilities catalogue

Every line above comes from a named public source. Where the evidence is thin, we say so rather than inventing confidence — see methodology.

What to do

Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.

What it costs when this goes wrong

This is where UK enforcement meets the vulnerability record. Where an unfixed vulnerability leads to a breach, the ICO treats it as a security failure under UK GDPR. Recent cases:

All UK cases caused by unpatched software →