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CVE-2018-17128

70
FAUCET Score

CVE-2018-17128 is a persistent Cross-Site Scripting (XSS) vulnerability found in the Visual Editor of MyBB versions prior to 1.8.19, specifically exploitable through a crafted Video MyCode. This medium-severity flaw (CVSS 5.4) has a low attack complexity and requires user interaction, potentially leading to limited confidentiality and integrity impacts. While not listed on CISA's KEV catalog, public exploit code exists on ExploitDB, though there is minimal community discussion or media coverage surrounding this vulnerability.

Impacted Technologies

VendorProductVersion(s)CPE
< 1.8.19CPE matchmatch criteria
cpe:2.3:a:mybb:mybb:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

5.4MEDIUM

CVSS:3.0/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
3.0

Exploit Intelligence

EPSS Score
74.75%
Probability of exploitation in next 30 days
EPSS Percentile
99.4%
Percentile rank of EPSS score among Peer Group
As of 2026-07-25
Model: v2026.06.15
ExploitDB: EDB-45449 · Sep 24, 2018
This CVE's current EPSS score of 0.7475 is in the 100th 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

Remediation records are not available for this CVE.

References

blog.mybb.com / 2018/09/11/mybb-1-8-19-released-security-maintenance-release
Release NotesVendor Advisory
exploit-db.com / exploits/45449
ExploitThird Party AdvisoryVDB Entry