Is CVE-2018-11347 actively exploited?

No active exploitation of CVE-2018-11347 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2018-11347 be exploited remotely?

Yes. CVE-2018-11347 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2018-11347?

CVE-2018-11347 has a CVSS score of 8.8 (HIGH).

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HIGH

CVE-2018-11347

CWE-113Published: December 4, 2018· Updated: Jun 17, 2026

8.8

CVSS v3.1

Official Description

The YunoHost 2.7.2 through 2.7.14 web application is affected by one HTTP Response Header Injection. This flaw allows an attacker to inject, into the response from the server, one or several HTTP Header. It requires an interaction with the user to send him the malicious link. It could be used to perform other attacks such as user redirection to a malicious website, HTTP response splitting, or HTTP cache poisoning.

NVD Source

Technical Analysis

CVE-2018-11347 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

Exploitation does not require any privileges, though user interaction (Required) is needed, which slightly reduces the risk of mass automated attacks.

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 8.8.