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CVE-2018-19057

21
FAUCET Score

CVE-2018-19057 describes a Cross-Site Scripting (XSS) vulnerability in SimpleMDE 1.11.2, affecting the sparksuite simplemde product. This flaw allows attackers to inject malicious scripts through crafted IMG elements using an onerror attribute or specific input containing bracket and parenthesis characters that are improperly handled when constructing A elements. Rated as Medium severity with a CVSS score of 6.1, it requires user interaction (UI:R) and could lead to low impact on confidentiality and integrity (C:L/I:L). There is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage, indicating a low current threat landscape.

Impacted Technologies

VendorProductVersion(s)CPE
1.11.2CPE matchmatch criteria
cpe:2.3:a:sparksuite:simplemde:1.11.2:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

6.1MEDIUM

CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
CHANGED
Confidentiality Impact
LOW
Integrity Impact
LOW
Availability Impact
NONE
Exploitability Score
2.8
Impact Score
2.7
CvssVersion
3.0

Exploit Intelligence

EPSS Score
0.79%
Probability of exploitation in next 30 days
EPSS Percentile
52.4%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0079 is in the 60th percentile among its peer group of 26,221 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 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 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Vendor Advisories (1)

npmGHSA-wg85-p6j7-gp3wmedium

SimpleMDE XSS Vulnerability

Nov 21, 2018

References

github.com / sparksuite/simplemde-markdown-editor/issues/721
ExploitIssue TrackingThird Party Advisory