CVE-2020-28847

FAUCET Score

CVE-2020-28847 is a Cross-Site Scripting (XSS) vulnerability found in xCss Valine v1.4.14, specifically exploitable through the 'nick' parameter in the /classes/Comment endpoint. This medium-severity flaw (CVSS 5.4) requires low privileges and user interaction, allowing an attacker to inject malicious scripts, potentially leading to limited impact on confidentiality and integrity. There is no evidence of active exploitation, public exploit code, or significant community discussion surrounding this vulnerability.

Impacted Technologies

Vendor	Product	Version(s)	CPE
		1.4.14CPE matchmatch criteria	cpe:2.3:a:valine.js:valine:1.4.14:::::::*

CVSS Data

CVSS version used by this source: 3.1

5.4MEDIUM

CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

REQUIRED

Scope

CHANGED

Confidentiality Impact

LOW

Integrity Impact

LOW

Availability Impact

NONE

Exploitability Score

2.3

Impact Score

2.7

CvssVersion

3.1

Exploit Intelligence

EPSS Score

0.45%

Probability of exploitation in next 30 days

EPSS Percentile

37.0%

Percentile rank of EPSS score among Peer Group

As of 2026-07-25

Model: v2026.06.15

This CVE's current EPSS score of 0.0045 is in the 55th percentile among its peer group of 15,224 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.0 Bluesky, 0.0 Mastodon, and 0.1 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.0 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (1)

npmpatch availablevia ghsa

Product: valineFixed in: 1.4.15

Vendor Advisories (1)

npmGHSA-6xvq-2gj8-4276medium

Cross site scripting in valine

Apr 6, 2022

References

github.com / xCss/Valine/issues/348

Issue TrackingThird Party Advisory