CVE-2023-49105Critical· 9.8▾ Hadal⚠ Exploited in the wildPoC availableAn 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 b…
▾ Hadal zone — Critical and actively exploited (CISA KEV / 0day)
impact 53.9 · likelihood 8.6 · exploitation 25
A public proof-of-concept already exists for this vulnerability — see Exploit availability below.
Public exploit / PoC code seen in 1 source. Availability, not in-the-wild use.
Exploit-prediction probability, daily snapshots since Aug 27.
Disclosure to exploitation, from the record and what we observed since indexing it.
Disclosed via NVD
Last analysed / modified upstream
Federal remediation due Aug 30, 2026
11%
11% → 43%
1 GitHub repo
Added to the CISA catalog on Aug 27, 2026. Federal remediation due Aug 30, 2026. View catalog ↗
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.
owncloud_server >= 10.6.0, < 10.13.1Upgrade past the affected range:
owncloud_server 10.13.1Field changes observed since this record was first indexed.
Connected by shared product, vendor, weakness, or advisory.
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