Vulnerability Details : CVE-2021-3783
yourls is vulnerable to Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Vulnerability category: Cross site scripting (XSS)
Exploit prediction scoring system (EPSS) score for CVE-2021-3783
Probability of exploitation activity in the next 30 days: 0.06%
Percentile, the proportion of vulnerabilities that are scored at or less: ~ 24 % EPSS Score History EPSS FAQ
CVSS scores for CVE-2021-3783
Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source |
---|---|---|---|---|---|
4.3
|
MEDIUM | AV:N/AC:M/Au:N/C:N/I:P/A:N |
8.6
|
2.9
|
NIST |
6.6
|
MEDIUM | CVSS:3.0/AV:N/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H |
0.7
|
5.9
|
huntr.dev |
6.1
|
MEDIUM | CVSS:3.1/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-2021-3783
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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)
- security@huntr.dev (Secondary)
References for CVE-2021-3783
-
https://github.com/yourls/yourls/commit/94f6bab91182142c96ff11f481585b445449efd4
Sanitize user input in upgrade (#3055) · YOURLS/YOURLS@94f6bab · GitHubPatch;Third Party Advisory
-
https://huntr.dev/bounties/b688e553-d0d9-4ddf-95a3-ff4b78004984
huntr: Cross-site Scripting (XSS) - Reflected PHP Vulnerability in yourlsIssue Tracking;Patch;Third Party Advisory
Products affected by CVE-2021-3783
- cpe:2.3:a:yourls:yourls:*:*:*:*:*:*:*:*