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CVE-2018-15596

31
FAUCET Score

CVE-2018-15596 is a Cross-Site Scripting (XSS) vulnerability found in MyBB 1.8.17, specifically within the forum RSS Syndication page (inc/class_feedgeneration.php). It allows an attacker to inject malicious scripts into thread titles, which are then unsanitized and rendered in the generated XML documents. Rated as Medium severity (CVSS 6.1), this vulnerability has a low attack complexity and requires user interaction, potentially leading to information disclosure and integrity compromise. While not actively exploited in the wild, public exploit code is available on ExploitDB, though there is minimal community discussion or media coverage surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
1.8.17CPE matchmatch criteria
cpe:2.3:a:mybb:mybb:1.8.17:*:*:*:*:*:*:*

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
2.26%
Probability of exploitation in next 30 days
EPSS Percentile
81.2%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
ExploitDB: EDB-45393 · Sep 12, 2018
This CVE's current EPSS score of 0.0226 is in the 91st percentile among its peer group of 26,234 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

Remediation records are not available for this CVE.

References

blog.mybb.com / 2018/08/22/mybb-1-8-18-released-security-maintenance-release
Vendor Advisory
exploit-db.com / exploits/45393
ExploitThird Party AdvisoryVDB Entry