Vulnerabilities

CVSS

9.8 Critical

Vector

CVSS:3.1/AC:L/AV:N/A:H/C:H/I:H/PR:N/S:U/UI:N

Risk score

100.0

Known exploited

CISA KEV

Published

2023-11-21

Status

Published

An issue was discovered in ownCloud owncloud/core before 10.13.1. An attacker can access, modify, or delete any file without authentication if the username of a victim is known, and the victim has no signing-key configured. This occurs because pre-signed URLs can be accepted even when no signing-key is configured for the owner of the files. The earliest affected version is 10.6.0.

Weaknesses

CWE-287

Coverage 1

threat-intel

ownCloud Flaw Exploited to Steal Nuclear Records From Philippine Research Body

A Chinese-speaking threat actor exploited a critical vulnerability in ownCloud to steal sensitive nuclear records from a Philippine research body. The attacker used custom Python scripts and open-source tools to gain una…

The Hacker News · 2d ago High

CVE-2023-49105CVE-2024-28000CVE-2026-53362PHCHvulnerabilitycyberattackdata breach

All articles mentioning it

Advisories and references

• owncloud.org/security
• owncloud.com/security-advisories/webdav-api-authentication-bypass-us...
• hunt.io/blog/chinese-speaking-operator-philippine-nuclear-naval-cont...
• cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2023-...