CVE•Published 2023-11-21•Modified 2026-08-28•1 article on news•5 live references•NVD data
CVE-2023-49105Owncloud · Owncloud_server
Vulnerability data via NVD (ingested)
CVSS v3.1
9.8
CRITICAL
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS percentile
96
Exploit Prediction Scoring System · top 4% of all CVEs
Weaknesses (CWE)
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.
Timeline
Published 2023-11-21
Modified 2026-08-28
External references
Search for exposed instances
Shodan + Censys queries derived from NVD's CPE data. The vuln tag catches assets Shodan has explicitly linked to this CVE; the product / banner fingerprints find exposed instances even when the vuln tag was never applied (which is common).
Shodan · vuln tag0 hosts
vuln:CVE-2023-49105Hosts Shodan has explicitly fingerprinted as vulnerable.
Shodan · product
product:"Owncloud Owncloud Server"All exposed Owncloud Owncloud Server instances — cross-reference with the CVE's affected-version range.
Shodan · banner/body mention
http.html:"Owncloud Server"HTTP body or banner mentions "Owncloud Server" — catches deploys Shodan didn't identify as a product.
More intel sources (5)
Shodan report
vuln:CVE-2023-49105Country / ASN / product breakdown for the vuln query.
Censys
vulnerabilities.cve_id: CVE-2023-49105Censys host search filtered to this CVE id.
grep.app
CVE-2023-49105Public source-code mentions — fast PoC discovery.
GitHub code
CVE-2023-49105GitHub code search for direct mentions.
Google dork
"CVE-2023-49105" exploit -site:nvd.nist.govWrite-ups and news, NVD excluded.
Known PoCs on GitHub (3)
CVE-2023-491053 repos
Ostorlab/KEVunknown
Ostorlab KEV: One-command to detect most remotely known exploitable vulnerabilities. Sourced from CISA KEV, Google's Tsunami, Ostorlab's Asteroid and Bug Bounty programs.
theguly/starsunknown
barmi/cve-patch-auditorGo
Audit CVE impact, patch status, remediation progress, and verification results across systems.