Reference page — cumulative record through Sunday, October 4, 2026 UTC. Reference pages update as the archive grows; only dated daily editions are immutable pages of record.

CVE-2023-49105

CVE-2023-49105CRITICAL

n/a n/a — An issue was discovered in ownCloud owncloud/core before 10.13.1.

  AV  AC  PR  UI  S  C  I  A   CVSS    EPSS   %ile   KEV
   N   L   N   N  U  H  H  H    9.8   .4292   98.7   YES

AFFECTED
  Product  Versions  Fixed
  n/a      n/a –     —

TIMELINE
  Nov 21  Reserved by mitre
  Nov 21  Published (CNA: mitre)
  Aug 27  ADDED TO KEV — CVE-2023-49105. Remediation due August 30, 2026.
  Aug 31  DUE DATE PASSED — CVE-2023-49105. CISA remediation deadline was August 30, 2026; still in catalog.

CWE-287 · CNA: mitre · CVSS v3.1 · 4 references · NVD status: Analyzed · KEV due August 30, 2026

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.

Lifecycle

Complete event history — 4 events, chronological
Date	Event	Detail
November 21, 2023	Reserved	Reserved by mitre
November 21, 2023	Published	Published (CNA: mitre)
August 27, 2026	KEV ADDED	ADDED TO KEV — CVE-2023-49105. Remediation due August 30, 2026.
August 31, 2026	DUE DATE PASSED	DUE DATE PASSED — CVE-2023-49105. CISA remediation deadline was August 30, 2026; still in catalog.

Affected

Affected products and packages — 1 row
Vendor	Product / Package	Ecosystem	Version introduced	Fixed
n/a	n/a	—	n/a	—

Weaknesses

CWE-287

References (4)

https://hunt.io/blog/chinese-speaking-operator-philippine-nuclear-naval-contractor [Third Party Advisory]
https://owncloud.com/security-advisories/webdav-api-authentication-bypass-using-pre-signed-urls/ [Vendor Advisory]
https://owncloud.org/security [Product]
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2023-49105 [US Government Resource]

Authoritative record: CVE-2023-49105 at cve.org

Weaknesses: CWE-287

About this page

This is a reference page, not a dated page of record. It assembles the complete lifecycle of CVE-2023-49105 from the CVE Program record, NVD enrichment, the CISA KEV catalog, EPSS, and OSV advisories. The box score's numbers (CVSS, EPSS, KEV status) are current as of Sunday, October 4, 2026 UTC and are re-derived as the archive grows; only dated daily editions are immutable pages of record. The authoritative source for this identifier is cve.org.