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CVE-2026-45734

🗓️ 18 Aug 2026 15:51:07Reported by GitHub_MType 
cve
 cve
🔗 web.nvd.nist.gov👁 24 Views

MyBB before 1.8.40 allows CAPTCHA bypass via challenge replay on multiple endpoints.

Related
Detection
Affected
Refs
ReporterTitlePublishedViews
Family
attackerkb
ATTACKERKB
CVE-2026-45734
18 Aug 202615:51
attackerkb
cvelist
Cvelist
CVE-2026-45734 MyBB: Default CAPTCHA missing invalidation
18 Aug 202615:51
cvelist
euvd
EUVD
EUVD-2026-61014
18 Aug 202615:51
euvd
nvd
NVD
CVE-2026-45734
18 Aug 202616:17
nvd
ptsecurity
Positive Technologies
PT-2026-77183
18 Aug 202600:00
ptsecurity
vulnrichment
Vulnrichment
CVE-2026-45734 MyBB: Default CAPTCHA missing invalidation
18 Aug 202615:51
vulnrichment
Vulners
Node
mybbmybbRange<1.8.40
[
  {
    "vendor": "mybb",
    "product": "mybb",
    "versions": [
      {
        "version": "< 1.8.40",
        "status": "affected"
      }
    ]
  }
]

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08 Sep 2026 21:02Current
5.4Medium risk
Vulners AI Score5.4
CVSS 3.15.3
EPSS0.00404
SSVC
24