Vulnerability Details : CVE-2019-19901
An issue was discovered in Backdrop CMS 1.13.x before 1.13.5 and 1.14.x before 1.14.2. It doesn't sufficiently filter output when displaying certain block descriptions created by administrators. An attacker could potentially craft a specialized description, then have an administrator execute scripting when configuring a layout, aka XSS. This issue is mitigated by the fact that the attacker would be required to have the permission to create custom blocks, which is typically an administrative task.
Vulnerability category: Cross site scripting (XSS)
Products affected by CVE-2019-19901
- cpe:2.3:a:backdropcms:backdrop_cms:*:*:*:*:*:*:*:*
- cpe:2.3:a:backdropcms:backdrop_cms:*:*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2019-19901
0.41%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 60 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2019-19901
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
|---|---|---|---|---|---|---|
|
3.5
|
LOW | AV:N/AC:M/Au:S/C:N/I:P/A:N |
6.8
|
2.9
|
NIST | |
|
4.8
|
MEDIUM | CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N |
1.7
|
2.7
|
NIST |
CWE ids for CVE-2019-19901
-
The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users.Assigned by: nvd@nist.gov (Primary)
References for CVE-2019-19901
-
https://backdropcms.org/security/backdrop-sa-core-2019-013
Backdrop core - Moderately critical - Cross Site Scripting - SA-CORE-2019-013 | Backdrop CMSVendor Advisory
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