Nextcloud Server before 9.0.52 & ownCloud Server before 9.0.4 are vulnerable to a log pollution vulnerability potentially leading to a local XSS
Published Mar 28, 2017
6.1
MEDIUMCVSS 3.0
EPSS 1.49%
Description
Nextcloud Server before 9.0.52 & ownCloud Server before 9.0.4 are vulnerable to a log pollution vulnerability potentially leading to a local XSS. The download log functionality in the admin screen is delivering the log in JSON format to the end-user. The file was delivered with an attachment disposition forcing the browser to download the document. However, Firefox running on Microsoft Windows would offer the user to open the data in the browser as an HTML document. Thus any injected data in the log would be executed.
Affected products
No data.
- < 9.0.52
- < 9.0.4
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.
No CVSS v3.1 score for this CVE.
CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
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
2022–2026- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Percentile over time
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Table of values (10 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 1.49% (0.01493) | 73.20th | v5 (v2026.06.15) |
| Jun 15, 2026 | 1.49% (0.01493) | 70.69th | v5 (v2026.06.15) |
| Mar 17, 2025 | 1.16% (0.01160) | 77.10th | v4 (v2025.03.14) |
| Dec 12, 2024 | 0.17% (0.00173) | 55.76th | v3 (v2023.03.01) |
| Jun 20, 2024 | 0.17% (0.00173) | 54.69th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.17% (0.00173) | 52.66th | v3 (v2023.03.01) |
| Mar 6, 2023 | 1.18% (0.01183) | 61.76th | v2 (v2022.01.01) |
| Oct 19, 2022 | 1.18% (0.01183) | 60.79th | v2 (v2022.01.01) |
| Apr 1, 2022 | 1.18% (0.01183) | 58.77th | v2 (v2022.01.01) |
| Feb 4, 2022 | 1.18% (0.01183) | 35.15th | v2 (v2022.01.01) |
References (8)
- http://www.securityfocus.com/bid/97284 vdb-entryx_refsource_BIDThird Party AdvisoryVDB Entry
- https://github.com/nextcloud/server/commit/94975af6db1551c2d23136c2ea22866a5b416070 x_refsource_MISCIssue TrackingPatchThird Party Advisory
- https://github.com/owncloud/core/commit/044ee072a647636b1a17c89265c7233b35371335 x_refsource_MISCIssue TrackingPatchThird Party Advisory
- https://github.com/owncloud/core/commit/b7fa2c5dc945b40bc6ed0a9a0e47c282ebf043e1 x_refsource_MISCIssue TrackingPatchThird Party Advisory
- https://github.com/owncloud/core/commit/efa35d621dc7ff975468e636a5d1c153511296dc x_refsource_MISCIssue TrackingPatchThird Party Advisory
- https://hackerone.com/reports/146278 x_refsource_MISCExploitThird Party Advisory
- https://nextcloud.com/security/advisory/?id=nc-sa-2016-002 x_refsource_MISCPatchVendor Advisory
- https://owncloud.org/security/advisory?id=oc-sa-2016-012 x_refsource_MISCPatchVendor Advisory
| Link | Providers | Tags |
|---|---|---|
| http://www.securityfocus.com/bid/97284 | vdb-entryx_refsource_BIDThird Party AdvisoryVDB Entry | |
| https://github.com/nextcloud/server/commit/94975af6db1551c2d23136c2ea22866a5b416070 | x_refsource_MISCIssue TrackingPatchThird Party Advisory | |
| https://github.com/owncloud/core/commit/044ee072a647636b1a17c89265c7233b35371335 | x_refsource_MISCIssue TrackingPatchThird Party Advisory | |
| https://github.com/owncloud/core/commit/b7fa2c5dc945b40bc6ed0a9a0e47c282ebf043e1 | x_refsource_MISCIssue TrackingPatchThird Party Advisory | |
| https://github.com/owncloud/core/commit/efa35d621dc7ff975468e636a5d1c153511296dc | x_refsource_MISCIssue TrackingPatchThird Party Advisory | |
| https://hackerone.com/reports/146278 | x_refsource_MISCExploitThird Party Advisory | |
| https://nextcloud.com/security/advisory/?id=nc-sa-2016-002 | x_refsource_MISCPatchVendor Advisory | |
| https://owncloud.org/security/advisory?id=oc-sa-2016-012 | x_refsource_MISCPatchVendor Advisory |
Change history (0)
No recorded changes yet.