CVE-2019-20102

6.1 mediumEPSS 1.1%

The attachment-uploading feature in Atlassian Confluence Server from version 6.14.0 through version 6.14.3, and version 6.15.0 before version 6.15.5 allows remote attackers to achieve stored cross-site- scripting (SXSS) via a malicious attachment with a modified `mimeType` parameter.

Severity

CVSS 3.1

6.1 medium

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

EPSS: 1.1% chance of exploitation in the next 30 days; higher than 65% of CVEs (scores of 2026-10-31)
CWE: CWE-79
Published: 2020-04-22
Modified: 2026-06-17
Record from: the NVD, synced 2026-10-19

Affected

atlassian:confluence_server

References

https://jira.atlassian.com/browse/CONFSERVER-59358
https://jira.atlassian.com/browse/CONFSERVER-59358

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