Vulnerability · Published Feb 3, 2021 · Assigned by hackerone
CVE-2020-8294
Medium 5.4
In plain English
A medium-severity cross-site scripting in Nextcloud Server. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.9% (higher than 61% of all known vulnerabilities).
Severity (CVSS NVD)5.4Medium
Exploit odds (30 days)0.9%top 38.9% of all CVEs
Exploited in the wildNo reportsnot in CISA KEV
Attack toolingNoneno public tooling known
Official 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.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| n/a | Nextcloud Server | Fixed in 20.0.2, 19.0.5, 18.0.11 |
Weakness: CWE-79
References
- https://hackerone.com/reports/1023787 x_refsource_CONFIRM
- https://nextcloud.com/security/advisory/?id=NC-SA-2021-002 x_refsource_CONFIRM