XSS in Nextcloud Calendar
CVE-2018-3763
In Nextcloud Calendar before 1.5.8 and 1.6.1, a missing sanitization of search results for an autocomplete field could lead to a stored XSS requiring user-interaction. The missing sanitization only affected group names, hence malicious search results could only be crafted by privileged users like admins or group admins.
Vulnerability class: XSS (Cross-Site Scripting)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 4.8 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N.
EPSS exploit prediction
EPSS: 0.006 (48.4th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 48th percentile — 48.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.006 · newest: 0.006 · change: 0.000
Affected products
- Nextcloud Calendar — versions 1.6.0
- Nextcloud Calendar Application — versions <1.6.1, <1.5.8
Weakness classification (CWE)
References
- nextcloud.com/security/advisory/ (Broken Link, Vendor Advisory)
Frequently asked questions
- What is CVE-2018-3763?
- CVE-2018-3763 is a medium-severity vulnerability in Nextcloud Calendar, classified under Cross-site Scripting. CVSS score: 4.8/10. Published 2018-07-05.
- How severe is CVE-2018-3763?
- Medium severity. CVSS v3 base score is 4.8 out of 10.