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Vulnerability record · CVE-2023-48301 · published 21 November 2023

CVE-2023-48301: Nextcloud server cross-site scripting vulnerability

Nextcloud · Nextcloud Server

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.

5.4 CVSS 3.1 Medium EPSS 0.64% · top 51.4% CWE-79 · Cross-site scripting
5.4CVSS 3.1 base score
0.64%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
6References, 2 tagged exploit
17 Jun 2026Last modified by NVD

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, 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.

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

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://github.com/nextcloud/circles/pull/1415 Patch
https://github.com/nextcloud/security-advisories/security/advisories/GHSA-wgpw-qqq2-gwv6 Vendor Advisory
https://hackerone.com/reports/2210038 ExploitThird Party Advisory
https://github.com/nextcloud/circles/pull/1415 Patch
https://github.com/nextcloud/security-advisories/security/advisories/GHSA-wgpw-qqq2-gwv6 Vendor Advisory
https://hackerone.com/reports/2210038 ExploitThird Party Advisory

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2023-48301), CISA KEV, FIRST EPSS (scores of 2026-09-28). This page is refreshed as NVD updates the record.