VulnerabilityModified
CVE-2020-8294
A missing link validation in Nextcloud Server before 20.0.2, 19.0.5, 18.0.11 allows execution of a stored XSS attack using Internet Explorer when saving a 'javascript:' URL in markdown format.
MEDIUM 5.4EPSS 0.90%
Does this matter?
Lower severity and a low EPSS score (0.90%). Track it; it rarely justifies an emergency change on its own.
Description
A missing link validation in Nextcloud Server before 20.0.2, 19.0.5, 18.0.11 allows execution of a stored XSS attack using Internet Explorer when saving a 'javascript:' URL in markdown format.
- CVSS 3.1
- 5.4 MEDIUMCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
- EPSS
- 0.90% probability · 58th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-79
- Affected
- nextcloud/nextcloud server
- Source
- support@hackerone.com
References
- https://hackerone.com/reports/1023787Permissions Required, Third Party Advisory
- https://nextcloud.com/security/advisory/?id=NC-SA-2021-002Vendor Advisory
- https://hackerone.com/reports/1023787Permissions Required, Third Party Advisory
- https://nextcloud.com/security/advisory/?id=NC-SA-2021-002Vendor Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.