Is CVE-2023-49792 actively exploited?

No active exploitation of CVE-2023-49792 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2023-49792 be exploited remotely?

Yes. CVE-2023-49792 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2023-49792?

CVE-2023-49792 has a CVSS score of 9.8 (CRITICAL).

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CRITICAL

CVE-2023-49792

CWE-307Published: December 22, 2023· Updated: Jun 17, 2026

9.8

CVSS v3.1

Official Description

Nextcloud Server provides data storage for Nextcloud, an open source cloud platform. In Nextcloud Server prior to versions 26.0.9 and 27.1.4; as well as Nextcloud Enterprise Server prior to versions 23.0.12.13, 24.0.12.9, 25.0.13.4, 26.0.9, and 27.1.4; when a (reverse) proxy is configured as trusted proxy the server could be tricked into reading a wrong remote address for an attacker, allowing them executing authentication attempts than intended. Nextcloud Server versions 26.0.9 and 27.1.4 and Nextcloud Enterprise Server versions 23.0.12.13, 24.0.12.9, 25.0.13.4, 26.0.9, and 27.1.4 contain a patch for this issue. No known workarounds are available.

NVD Source

Risk Analysis

Nextcloud Server is vulnerable to a flaw where a misconfigured trusted proxy allows attackers to spoof their remote address. This can lead to the bypass of authentication protections, warranting a critical severity rating.

There is no known public exploit, and the vulnerability is not in the KEV catalog. It is remotely exploitable.

Recommended Action

Upgrade to Nextcloud Server versions 26.0.9 or 27.1.4, or the corresponding enterprise versions, to apply the necessary security patches.

Generated by the CTIWATCH analysis pipeline from this CVE's metadata (CVSS, EPSS, KEV status, exploit intelligence). Verify against vendor advisories before acting.

Technical Analysis

CVE-2023-49792 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 9.8.