AEGLIX vulnerability intelligence
CVE-2023-49105
CRITICAL · CVSS 9.8 · Analyzed
Published: 2023-11-21 · Updated: 2026-08-28 · Source: NVD
Vulnerability overview
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.
Severity and scoring
- CVSS score
- 9.8 · CRITICAL
- CVSS version
- 3.1
- CVSS vector
- CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- Weaknesses
- CWE-287
CVSS measures technical severity; it does not establish whether this vulnerability is being exploited in your environment.
Known exploitation and remediation
Listed in CISA’s Known Exploited Vulnerabilities catalog.
- Affected product
- ownCloud · ownCloud
- Added to catalog
- 2026-08-27
- Required action
- Apply mitigations in accordance with vendor instructions, ensuring compliance with CISA’s BOD 26-04 Prioritizing Security Updates Based on Risk (see URL in Notes) guidance and CISA’s “Forensics Triage Requirements” (see URL in Notes). Follow applicable BOD 26-04 guidance for cloud services or discontinue use of the product if mitigations are unavailable. Stakeholders are responsible for evaluating each asset's internet exposure and ensuring adherence to BOD 26-04 patching guidelines.
- CISA remediation due date
- 2026-08-30
CISA deadlines apply to the organizations covered by its directives. Confirm your own remediation requirements.
Verify affected versions and patch availability in the vendor advisory before making changes.
Affected products and versions
cpe:2.3:a:owncloud:owncloud_server:*:*:*:*:*:*:*:*
From (inclusive): 10.6.0
Before (exclusive): 10.13.1
These are NVD CPE applicability entries. Some products depend on configuration conditions; consult the official record to confirm applicability.
Advisories and references
- https://owncloud.com/security-advisories/webdav-api-authentication-bypass-using-pre-signed-urls/
Vendor Advisory
- https://owncloud.org/security
Product
- https://owncloud.com/security-advisories/webdav-api-authentication-bypass-using-pre-signed-urls/
Vendor Advisory
- https://owncloud.org/security
Product
- https://hunt.io/blog/chinese-speaking-operator-philippine-nuclear-naval-contractor
Third Party Advisory
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2023-49105
US Government Resource