CVE-2023-48302

CWE-79 — Cross-site Scripting (XSS)2 documents2 sources

Severity

5.4MEDIUM

EPSS

0.4%

top 40.19%

CISA KEV

Not in KEV

Exploit

No known exploits

Affected products

Nextcloud Nextcloud Server Nextcloud Security-advisories

Timeline

PublishedNov 21

Description

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, when a user is tricked into copy pasting HTML code without markup (Ctrl+Shift+V) the markup will actually render. 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 text.

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:N/A:LExploitability: 2.1 | Impact: 1.4

Affected Packages2 packages

▶NVDnextcloud/nextcloud_server25.0.0 — 25.0.13+2

▶CVEListV5nextcloud/security-advisories>= 25.0.0, < 25.0.13, >= 26.0.0, < 26.0.8, >= 27.0.0, < 27.1.3+2

Patches

Patch: github.com ↗Patch: github.com ↗

🔴Vulnerability Details

CVEList

Nextcloud Server vulnerable to Self XSS when pasting HTML into Text app with Ctrl+Shift+V↗2023-11-21

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