Public proof of conceptFix available

CVE-2023-41362

Q: Is CVE-2023-41362 actively exploited?

A proof-of-concept exploit exists for CVE-2023-41362, but active exploitation has not been confirmed at this time.

Q: What is the CVSS score for CVE-2023-41362?

CVE-2023-41362 has a CVSS v3 base score of 7.2 (HIGH severity), with vector string CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H.

A public proof of concept exists; no exploitation attested.

Published2023-08-29
Fixed in1.8.36
WeaknessCWE-94

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

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.

Timeline

dates in UTC

2023-08-2916:15CVE publishedNVD
2026-10-2319:23First public proof of conceptPoC-in-GitHub

Observed activity

isMalicious corpus · updated 2026-10-23 18:48 UTC

Indicators tagged with this CVE, per day0 indicators over 7 days

Block these indicators

Firewall list (EDL, text): https://api.ismalicious.com/edl/cve/CVE-2023-41362?format=txt
CSV export: https://api.ismalicious.com/edl/cve/CVE-2023-41362?format=csv
TAXII collection of exploited CVEs
The EDL and CSV take an API key on the Pro plan.

Versions per branch

NVD

Mybb

Branch	Affected	Fixed in	Source
1.8	< 1.8.36	1.8.36	NVD

as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.

Fix

Update Mybb to 1.8.36

Advisories and patches

github.comPatch
github.comPatch
mybb.comRelease Notes

Detection

read 2026-10-23 19:23 UTC

Nuclei template: none so far
Exploit-DB: no entry
Proof-of-concept repositories: 1 repository, unverifiedSorceryIE/CVE-2023-41362_MyBB_ACP_RCE

Sources

CISA-ADPSSVC decisionpoc2024-10-01
OpenCVESSVC decisionpoc—
NVDCVSS 3.17.2read 2026-10-23
NVDweakness (CWE)CWE-94read 2026-10-23
FIRST EPSSEPSS score2.1 %2026-10-22
PoC-in-GitHubproof of concept1read 2026-10-23

Technical details

CVSS v3 Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
Published: 2023-08-29
Last Modified: 2026-06-17
NVD status: Modified

Frequently asked questions

What is CVE-2023-41362?

Is CVE-2023-41362 actively exploited?

A proof-of-concept exploit exists for CVE-2023-41362, but active exploitation has not been confirmed at this time.

What is the CVSS score for CVE-2023-41362?

CVE-2023-41362 has a CVSS v3 base score of 7.2 (HIGH severity), with vector string CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H.

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