What’s Vulnerable › Vulnerabilities

CVE-2018-15596

• Severity: medium (CVSS 6.1 v3.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 2.3% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2018-08-28 · updated 2026-06-17
• Weakness: CWE-79

Description

An issue was discovered in inc/class_feedgeneration.php in MyBB 1.8.17. On the forum RSS Syndication page, one can generate a URL such as http://localhost/syndication.php?fid=&type=atom1.0&limit=15. The thread titles (within title elements of the generated XML documents) aren't sanitized, leading to XSS.

Affected products

• mybb: 1.8.17

References

• https://blog.mybb.com/2018/08/22/mybb-1-8-18-released-security-maintenance-release/
• https://www.exploit-db.com/exploits/45393/
• https://blog.mybb.com/2018/08/22/mybb-1-8-18-released-security-maintenance-release/
• https://www.exploit-db.com/exploits/45393/

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