Vulnerability Details : CVE-2018-20583
Potential exploit
Cross-site scripting (XSS) vulnerability in the PHP League CommonMark library versions 0.15.6 through 0.18.x before 0.18.1 allows remote attackers to insert unsafe URLs into HTML (even if allow_unsafe_links is false) via a newline character (e.g., writing javascript as javascri%0apt).
Vulnerability category: Cross site scripting (XSS)
Products affected by CVE-2018-20583
- cpe:2.3:a:thephpleague:commonmark:*:*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2018-20583
0.34%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 71 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2018-20583
Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
---|---|---|---|---|---|---|
4.3
|
MEDIUM | AV:N/AC:M/Au:N/C:N/I:P/A:N |
8.6
|
2.9
|
NIST | |
6.1
|
MEDIUM | CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N |
2.8
|
2.7
|
NIST |
CWE ids for CVE-2018-20583
-
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-2018-20583
-
https://commonmark.thephpleague.com/changelog/
Release Notes - CommonMark for PHPRelease Notes;Third Party Advisory
-
https://github.com/thephpleague/commonmark/issues/337
CVE-2018-20583 - XSS Vulnerability · Issue #337 · thephpleague/commonmark · GitHubExploit;Third Party Advisory
-
https://github.com/thephpleague/commonmark/releases/tag/0.18.1
Release 0.18.1 · thephpleague/commonmark · GitHubRelease Notes;Third Party Advisory
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