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CVE-2020-13870

15
FAUCET Score

CVE-2020-13870 is a stored Cross-Site Scripting (XSS) vulnerability affecting the Comments plugin for Craft CMS, specifically versions prior to 1.5.5. This flaw allows an authenticated attacker to inject malicious scripts through an asset volume name. Rated Medium severity with a CVSS score of 5.4, successful exploitation requires user interaction and could lead to limited impact on confidentiality and integrity. There is currently no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage surrounding this vulnerability.

Impacted Technologies

VendorProductVersion(s)CPE
< 1.5.5CPE matchmatch criteria
cpe:2.3:a:verbb:comments:*:*:*:*:*:craft_cms:*:*

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
0.54%
Probability of exploitation in next 30 days
EPSS Percentile
42.2%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0054 is in the 67th percentile among its peer group of 15,224 CVEs.

Social Chatter

No social media mentions found for this CVE.

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)

composerpatch availablevia ghsa
Product: verbb/commentsFixed in: 1.5.5

Vendor Advisories (1)

composerGHSA-69ww-wv3j-mhg4medium

Comments plugin stored Cross-site Scripting (XSS) via an asset volume name

May 24, 2022

References

github.com / verbb/comments/blob/craft-3/CHANGELOG.md
Release NotesThird Party Advisory