Is CVE-2018-1000844 actively exploited?

No active exploitation of CVE-2018-1000844 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2018-1000844 be exploited remotely?

Yes. CVE-2018-1000844 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2018-1000844?

CVE-2018-1000844 has a CVSS score of 9.1 (CRITICAL).

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CRITICAL

CVE-2018-1000844

CWE-611Published: December 20, 2018· Updated: Jun 17, 2026

9.1

CVSS v3.1

Official Description

Square Open Source Retrofit version Prior to commit 4a693c5aeeef2be6c7ecf80e7b5ec79f6ab59437 contains a XML External Entity (XXE) vulnerability in JAXB that can result in An attacker could use this to remotely read files from the file system or to perform SSRF.. This vulnerability appears to have been fixed in After commit 4a693c5aeeef2be6c7ecf80e7b5ec79f6ab59437.

NVD Source

Technical Analysis

CVE-2018-1000844 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), with a CVSS base score of 9.1.