CVE-2018-20233

MEDIUM 6.5CVE-2018-20233 · Published 18/01/2019 · updated 17/06/2026

In short

CVE-2018-20233 is a MEDIUM (CVSS 6.5) vulnerability affecting universal plugin manager (atlassian).
Chance of exploitation in the next 30 days (EPSS): 1.8%, higher than 78.7% of all vulnerabilities.
Fix: update to 2.22.14 or later.

Package	Affected versions	Patched versions
universal plugin manager atlassian	`< 2.22.14`	`2.22.14`

Description

The Upload add-on resource in Atlassian Universal Plugin Manager before version 2.22.14 allows remote attackers who have system administrator privileges to read files, make network requests and perform a denial of service attack via an XML External Entity vulnerability in the parsing of atlassian plugin xml files in an uploaded JAR.

References

securityfocus.com/bid/106661 · Third Party Advisory
ecosystem.atlassian.net/browse/UPM-5964 · Issue Tracking

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