CVE-2018-20233
CVE-2018-20233 is a medium-severity vulnerability in Atlassian Universal Plugin Manager with a CVSS 3.x base score of 6.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-611.
Key facts
- Severity: Medium (CVSS 3.x base score 6.5)
- CVSS v2: 5.5
- EPSS exploit prediction: 2% (76th percentile)
- Actively exploited: Not listed in CISA KEV
- Weakness: CWE-611
- Affected product: Atlassian Universal Plugin Manager
- Published:
- Last modified:
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.
Frequently asked questions
- What is CVE-2018-20233?
- 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.
- How severe is CVE-2018-20233?
- CVE-2018-20233 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over network with low attack complexity, requires high privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability high.
- Is CVE-2018-20233 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (76th percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2018-20233?
- CVE-2018-20233 affects Atlassian Universal Plugin Manager. See the affected-products list for the exact vulnerable versions.
- How do I fix CVE-2018-20233?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
- When was CVE-2018-20233 published?
- CVE-2018-20233 was published on 2019-01-18 and last updated on 2026-06-17.
References
Affected products (1)
- cpe:2.3:a:atlassian:universal_plugin_manager:*:*:*:*:*:*:*:*
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