Lucene search
+L

CVE-2026-45116

🗓️ 18 Aug 2026 15:46:34Reported by GitHub_MType 
cve
 cve
🔗 web.nvd.nist.gov👁 34 Views🌐 WEB

MyBB UserDataHandler skips checkbox validation for non-array profile fields, enabling stored XSS fixed in 1.8.40.

Related
Detection
Affected
Refs
Paths
ReporterTitlePublishedViews
Family
attackerkb
attackerkb
CVE-2026-45116
18 Aug 202615:46
–attackerkb
cvelist
Cvelist
CVE-2026-45116 MyBB: Profile field type confusion XSS
18 Aug 202615:46
–cvelist
euvd
EUVD
EUVD-2026-61006
18 Aug 202615:46
–euvd
mend
Mend
CVE-2026-45116
18 Aug 202615:46
–mend
nvd
NVD
CVE-2026-45116
18 Aug 202616:17
–nvd
ptsecurity
Positive Technologies
PT-2026-77170
18 Aug 202600:00
–ptsecurity
rapid7
Rapid7 Vulnerability Database (full)
CVE-2026-45116: Improper Neutralization of Input During Web Page Generation
18 Aug 202600:00
–rapid7
vulnrichment
Vulnrichment
CVE-2026-45116 MyBB: Profile field type confusion XSS
18 Aug 202615:46
–vulnrichment
Vulners
Node
mybbmybbRange<1.8.40
[
  {
    "vendor": "mybb",
    "product": "mybb",
    "versions": [
      {
        "version": "< 1.8.40",
        "status": "affected"
      }
    ]
  }
]
ParameterPositionPathDescriptionCWE
profile_fields[fidX]request bodyinc/datahandlers/user.phpStored XSS via improper validation of checkbox/multiselect profile fields in UserDataHandler::verify_profile_fields; non-array values bypass validation and are stored unverified.CWE-79
profile_fields[fidX]nestedmember.phpStored value rendered directly by member.php without MyCode parsing, enabling XSS on profile display.CWE-79
profile_fields[fidX]nestedinc/functions_post.phpStored value rendered in posts by inc/functions_post.php without MyCode parsing, enabling XSS in posts.CWE-79

Data

Build on a solid foundation with Vulners data

We provide the essential building blocks for cybersecurity solutions with comprehensive, structured, and constantly updated vulnerability and exploits data

Api

Power your application with Vulners API

The Vulners REST API offers reliable, high-performance access to vulnerability intelligence, with 99.9% SLA uptime and CDN-backed data delivery for seamless global access

App

Assess and manage vulnerabilities with Vulners tools

Built on top of Vulners' database and SDK, end-user solutions give security professionals and developers lightweight and powerful tools for vulnerability remediation

08 Sep 2026 21:02Current
5.9Medium risk
Vulners AI Score5.9
CVSS 3.18.7
EPSS0.0043
SSVC
34