CVE-2023-48302

low-risk
Published 2023-11-21

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.

Do I need to act?

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0.39% chance of exploitation
EPSS score — low exploit probability
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Not on CISA KEV list
No confirmed active exploitation reported to CISA
?
Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
3
CVSS 3.5/10 Low
NETWORK / LOW complexity

Affected Products (2)

Affected Vendors

Nextcloud

References (6)

Vendor Advisory https://github.com/nextcloud/security-advisories/security/advisories/GHSA-p7g9-x...
Patch https://github.com/nextcloud/text/pull/4877
Permissions Required https://hackerone.com/reports/2211561
Vendor Advisory https://github.com/nextcloud/security-advisories/security/advisories/GHSA-p7g9-x...
Patch https://github.com/nextcloud/text/pull/4877
Permissions Required https://hackerone.com/reports/2211561
24
/ 100
low-risk
Severity 16/34 · Moderate
Exploitability 1/34 · Minimal
Exposure 7/34 · Low