Vulnerability · Published Aug 21, 2020 · Assigned by hackerone
CVE-2020-8189
Medium 5.4
In plain English
A medium-severity cross-site scripting in Desktop Client. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 1.4% (higher than 73% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Severity (CVSS NVD)5.4Medium
Exploit odds (30 days)1.4%top 27.4% of all CVEs
Exploited in the wildNo reportsnot in CISA KEV
Attack toolingNoneno public tooling known
Official description
A cross-site scripting error in Nextcloud Desktop client 2.6.4 allowed to present any html (including local links) when responding with invalid data on the login attempt.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian:12 | nextcloud-desktop | 3.0.1-1 | DEBIAN-CVE-2020-8189 |
| Debian:13 | nextcloud-desktop | 3.0.1-1 | DEBIAN-CVE-2020-8189 |
| Debian:14 | nextcloud-desktop | 3.0.1-1 | DEBIAN-CVE-2020-8189 |
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| n/a | Desktop Client | 2.6.5 |
Weakness: CWE-79
References
- https://hackerone.com/reports/685552 x_refsource_MISC
- https://nextcloud.com/security/advisory/?id=NC-SA-2020-027 x_refsource_MISC
- GLSA-202009-09 vendor-advisory, x_refsource_GENTOO