CVE-2018-20233 is an XML External Entity (XXE) vulnerability affecting the Upload add-on resource in Atlassian Universal Plugin Manager versions prior to 2.22.14. This flaw allows remote attackers with system administrator privileges to read files, make network requests, and perform denial of service attacks by exploiting the parsing of atlassian plugin XML files within uploaded JARs. Rated 6.5 (Medium) on the CVSS scale, it requires high privileges (PR:H) but has low attack complexity (AC:L) and no user interaction (UI:N), with potential for high impact on confidentiality and availability. There is no evidence of active exploitation, publicly available exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
< 2.22.14CPE matchmatch criteria | cpe:2.3:a:atlassian:universal_plugin_manager:*:*:*:*:*:*:*:* |
CVSS version used by this source: 3.0
CVSS:3.0/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:H
The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.1 GitHub mentions.
No media coverage found for this CVE.
The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.
Remediation records are not available for this CVE.