CVE-2018-15596

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.
Cross-site Scripting
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTNIST
6.1 MEDIUM
NETWORK
LOW
NONE
CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
mitreCNA
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CVEADP
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Base Score
CVSS 3.x
EPSS Score
Percentile: 79%
VendorProductVersion
mybbmybb
1.8.17
𝑥
= Vulnerable software versions
Common Weakness Enumeration
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/