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CVE-2023-49279

LOW
Published 2023-12-12T19:35:05.931Z
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CVSS Score

V3.1
3.7
/10
CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:L/I:L/A:N
Base Score Metrics
Exploitability: N/A Impact: N/A

EPSS Score

v2025.03.14
0.004
probability
of exploitation in the wild

There is a 0.4% chance that this vulnerability will be exploited in the wild within the next 30 days.

Updated: 2025-06-25
Exploit Probability
Percentile: 0.624
Higher than 62.4% of all CVEs

Attack Vector Metrics

Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
LOW
User Interaction
REQUIRED
Scope
UNCHANGED

Impact Metrics

Confidentiality
LOW
Integrity
LOW
Availability
NONE

Description

Umbraco is an ASP.NET content management system (CMS). Starting in version 7.0.0 and prior to versions 7.15.11, 8.18.9, 10.7.0, 11.5.0, and 12.2.0, a user with access to the backoffice can upload SVG files that include scripts. If the user can trick another user to load the media directly in a browser, the scripts can be executed. Versions 7.15.11, 8.18.9, 10.7.0, 11.5.0, and 12.2.0 contain a patch for this issue. Some workarounds are available. Implement the server side file validation or serve all media from an different host (e.g cdn) than where Umbraco is hosted.

Available Exploits

No exploits available for this CVE.

Related News

No news articles found for this CVE.

Affected Products

umbraco

Umbraco-CMS

Affected Versions:

>= 7.0.0, < 7.15.11 >= 8.0.0, < 8.18.9 >= 9.0.0-rc001, < 10.7.0 >= 11.0.0-rc1, < 11.5.0 >= 12.0.0-rc1, < 12.2.0

GitHub Security Advisories

Community-driven vulnerability intelligence from GitHub

✓ GitHub Reviewed LOW

Stored XSS via SVG File Upload

GHSA-6xmx-85x3-4cv2

Advisory Details

#### Impact A user with access to the backoffice can upload SVG files that include scripts. If the user can trick another user to load the media directly in a browser, the scripts can be executed. #### Workaround Implement the server side file validation https://docs.umbraco.com/umbraco-cms/reference/security/serverside-file-validation or Serve all media from an different host (e.g cdn) that where umbraco is hosted

Affected Packages

NuGet Umbraco.CMS
ECOSYSTEM: ≥7.0.0 <7.15.11
NuGet Umbraco.CMS
ECOSYSTEM: ≥8.0.0 <8.18.9
NuGet Umbraco.CMS
ECOSYSTEM: ≥9.0.0 <10.7.0
NuGet Umbraco.CMS
ECOSYSTEM: ≥11.0.0 <11.5.0
NuGet Umbraco.CMS
ECOSYSTEM: ≥12.0.0 <12.2.0

CVSS Scoring

CVSS Score

2.5

CVSS Vector

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

References

WEB https://github.com/umbraco/Umbraco-CMS/security/advisories/GHSA-6xmx-85x3-4cv2
ADVISORY https://nvd.nist.gov/vuln/detail/CVE-2023-49279
WEB https://docs.umbraco.com/umbraco-cms/reference/security/serverside-file-validation
PACKAGE https://github.com/umbraco/Umbraco-CMS

Advisory provided by GitHub Security Advisory Database. Published: December 13, 2023, Modified: December 13, 2023

References

https://github.com/umbraco/Umbraco-CMS/security/advisories/GHSA-6xmx-85x3-4cv2
https://docs.umbraco.com/umbraco-cms/reference/security/serverside-file-validation
Published: 2023-12-12T19:35:05.931Z
Last Modified: 2024-08-28T14:43:18.346Z
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