UpHeron
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Servers and applications

CVE-2023-41362

ACP Templates RCE

Severity
High 7.2
Published
28 Aug 2023
Last changed
17 Jun 2026
Added to UpHeron
1 Nov 2026
Fixed in
1.8.36
Also known as
GHSA-pr74-wvp3-q6f5
Sources
NVD, Project advisories (GitHub)

Description

MyBB before 1.8.36 allows Code Injection by users with certain high privileges. Templates in Admin CP intentionally use eval, and there was some validation of the input to eval, but type juggling interfered with this when using PCRE within PHP.

Affected software

SoftwareAffected versions
MyBBServers and applications · cpe:a:mybb:mybb
  • Every version before 1.8.36
MyBBServers and applications · github:mybb/mybb
  • Every version before 1.8.36

References

  • NVD https://nvd.nist.gov/vuln/detail/CVE-2023-41362
  • CVE.org https://www.cve.org/CVERecord?id=CVE-2023-41362
  • GitHub Advisory Database https://github.com/advisories/GHSA-pr74-wvp3-q6f5
  • github.com https://github.com/mybb/mybb/security/advisories/GHSA-pr74-wvp3-q6f5