What is CVE-2023-39955?

CVE-2023-39955 is a low-severity vulnerability in Nextcloud Notes, classified under Cross-site Scripting. CVSS score: 3.5/10. Published 2023-08-10.

How severe is CVE-2023-39955?

Low severity. CVSS v3 base score is 3.5 out of 10.

XSS in Nextcloud Notes

CVE-2023-39955

Notes is a note-taking app for Nextcloud, an open-source cloud platform. Starting in version 4.4.0 and prior to version 4.8.0, when creating a note file with HTML, the content is rendered in the preview instead of the file being offered to…

Vulnerability class: XSS (Cross-Site Scripting)

EPSS: 0.005 (37.8th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 3.5 (Low). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:L/A:N.

Affected products

Nextcloud Notes
Nextcloud Security-advisories — versions >= 4.4.0, < 4.8.0

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

References

security-advisories@github.com (x_refsource_CONFIRM, Patch, Vendor Advisory)
security-advisories@github.com (Patch, x_refsource_MISC)
security-advisories@github.com (Third Party Advisory, x_refsource_MISC)

Frequently asked questions

What is CVE-2023-39955?: CVE-2023-39955 is a low-severity vulnerability in Nextcloud Notes, classified under Cross-site Scripting. CVSS score: 3.5/10. Published 2023-08-10.
How severe is CVE-2023-39955?: Low severity. CVSS v3 base score is 3.5 out of 10.