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
Published Apr 22, 2020
6.1
MEDIUMCVSS 3.1
EPSS 1.08%
Description
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.
Affected products
-
- Version 6.14.0StatusaffectedConstraints<unspecified
- Version 6.15.0StatusaffectedConstraints<unspecified
- Version unspecifiedStatusaffectedConstraints<=6.14.3
- Version unspecifiedStatusaffectedConstraints<6.15.5
- Version
Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
| Vendor | Product | Default status | Versions | |||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Atlassian | Confluence Server | n/a |
|
- ≥ 6.14.0 · ≤ 6.14.3
- ≥ 6.15.0 · < 6.15.5
No data.
No Red Hat product state for this CVE.
No package ranges for this CVE.
Remediation
No remediation recorded yet.
Metrics
No CVSS v4.0 score for this CVE.
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
No CVSS v3.0 score for this CVE.
AV:N/AC:M/Au:N/C:N/I:P/A:N
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.
Score over time
2021–2026- EPSS v1
- EPSS v5
- EPSS v2
- EPSS v3
Percentile over time
- EPSS v1
- EPSS v5
- EPSS v2
- EPSS v3
Table of values (11 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 1.08% (0.01085) | 64.01th | v5 (v2026.06.15) |
| Sep 20, 2026 | 1.08% (0.01085) | 63.77th | v5 (v2026.06.15) |
| Jul 20, 2024 | 0.11% (0.00113) | 45.21th | v3 (v2023.03.01) |
| Oct 20, 2023 | 0.11% (0.00113) | 44.45th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.11% (0.00110) | 42.42th | v3 (v2023.03.01) |
| Mar 6, 2023 | 1.05% (0.01055) | 52.13th | v2 (v2022.01.01) |
| Apr 1, 2022 | 1.05% (0.01055) | 48.43th | v2 (v2022.01.01) |
| Mar 31, 2022 | 2.56% (0.02561) | 62.63th | v2 (v2022.01.01) |
| Jan 6, 2022 | 2.30% (0.02304) | 53.25th | v1 |
| Jan 5, 2022 | 0.52% (0.00523) | 33.47th | v5 (v2026.06.15) |
| Apr 14, 2021 | 0.52% (0.00523) | 0.00th | v1 |
References (1)
- https://jira.atlassian.com/browse/CONFSERVER-59358 x_refsource_MISCPermissions Required
| Link | Providers | Tags |
|---|---|---|
| https://jira.atlassian.com/browse/CONFSERVER-59358 | x_refsource_MISCPermissions Required |
Change history (0)
No recorded changes yet.