Critical severity9.8CISA KEVNVD Advisory· Published Nov 21, 2023· Updated Aug 28, 2026
CVE-2023-49105
CVE-2023-49105
Description
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.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected products
3Patches
Vulnerability mechanics
References
4- hunt.io/blog/chinese-speaking-operator-philippine-nuclear-naval-contractornvdThird Party Advisory
- owncloud.com/security-advisories/webdav-api-authentication-bypass-using-pre-signed-urls/nvdVendor Advisory
- owncloud.org/securitynvdProduct
- www.cisa.gov/known-exploited-vulnerabilities-catalognvdUS Government Resource
News mentions
4- Old, Unpatched Flaws Give Attackers Access to Philippines Nuclear AgencyDark Reading · Sep 2, 2026
- ownCloud Flaw Exploited to Steal Nuclear Records From Philippine Research BodyThe Hacker News · Aug 28, 2026
- Hackers Exploit ownCloud and WordPress Flaws to Steal Philippine Nuclear and Naval DataCyber Security News · Aug 27, 2026
- CISA Adds Three Known Exploited Vulnerabilities to CatalogCISA Alerts