Nextcloud Server Circles XSS via link injection pre27.1.3
CVE-2023-48301 Published on November 21, 2023
Nextcloud Server HTML injection in search UI when selecting a circle with HTML in the display name
Nextcloud Server provides data storage for Nextcloud, an open source cloud platform. Starting in version 25.0.0 and prior to versions 25.0.13, 26.0.8, and 27.1.3 of Nextcloud Server and Nextcloud Enterprise Server, an attacker could insert links into circles name that would be opened when clicking the circle name in a search filter. Nextcloud Server and Nextcloud Enterprise Server versions 25.0.13, 26.0.8, and 27.1.3 contain a fix for this issue. As a workaround, disable app circles.
Vulnerability Analysis
CVE-2023-48301 can be exploited with network access, requires user interaction and a small amount of user privileges. This vulnerability is considered to have a low attack complexity. Public availability of a proof of concept (POC) exploit exists for CVE-2023-48301. The potential impact of an exploit of this vulnerability is considered to have no impact on confidentiality and integrity, and a small impact on availability.
Weakness Type
What is a XSS Vulnerability?
The software does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users.
CVE-2023-48301 has been classified to as a XSS vulnerability or weakness.
Products Associated with CVE-2023-48301
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Affected Versions
nextcloud security-advisories:- Version >= 25.0.0, < 25.0.13 is affected.
- Version >= 26.0.0, < 26.0.8 is affected.
- Version >= 27.0.0, < 27.1.3 is affected.
Exploit Probability
EPSS (Exploit Prediction Scoring System) scores estimate the probability that a vulnerability will be exploited in the wild within the next 30 days. The percentile shows you how this score compares to all other vulnerabilities.