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.
CVE-2023-41362
This high-severity CVE scores 7.2 under NVD CVSS v3. EPSS exploit probability: 1.6%, top 26% of all CVEs by exploit prediction. GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).
- High severity, but no confirmed exploitation yet
No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.
- CVSS v3
- 7.2
- EG Score
- 7.2(medium)
- EG Risk
- 48(Track*)EG Risk 48/100SSVC: Track*
EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).
How it’s computedSeverity72% × 45%Exploitation40% × 40%Automatability0% × 15%Action: Watch closely — could escalate to Attend. - EPSS PROB
- 2%
- EPSS %ILE
- 74%
- KEV
- Not listed
Published
August 29, 2023
Last Modified
June 17, 2026
References (8)
- cve@mitrehttps://blog.sorcery.ie/posts/mybb_acp_rce/
- cve@mitrehttps://github.com/mybb/mybb/commit/a43a6f22944e769a6eabc58c39e7bc18c1cab4ca.patch
- cve@mitrehttps://github.com/mybb/mybb/security/advisories/GHSA-pr74-wvp3-q6f5
- cve@mitrehttps://mybb.com/versions/1.8.36/
- af854a3a-2127-422b-91ae-364da2661108https://blog.sorcery.ie/posts/mybb_acp_rce/
- af854a3a-2127-422b-91ae-364da2661108https://github.com/mybb/mybb/commit/a43a6f22944e769a6eabc58c39e7bc18c1cab4ca.patch
- af854a3a-2127-422b-91ae-364da2661108https://github.com/mybb/mybb/security/advisories/GHSA-pr74-wvp3-q6f5
- af854a3a-2127-422b-91ae-364da2661108https://mybb.com/versions/1.8.36/
Weakness Classification(1)
MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.
Data Freshness Timeline
(refreshed 7× in last 7d / 44× in last 30d)
Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.
Showing the most recent 100 of 125 total refreshes for this CVE.
- 2026-08-09 13:44 UTCEPSS rescore
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- 2026-07-23 14:16 UTCEPSS rescore
- 2026-07-23 02:26 UTCEG score recompute
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- 2026-06-09 22:17 UTCOSV refresh
- 2026-06-06 13:46 UTCEPSS rescore
Publicly available exploits
(1 reference)Working exploit code is in the public domain (1 GitHub PoC). Defenders should treat patch urgency accordingly — public PoCs typically lead to mass-exploitation within 24-72 hours.
- Open source ↗GitHub PoCSorceryIE/CVE-2023-41362_MyBB_ACP_RCEFirst seen Sep 11, 2023
Related CVEs(same CWE)
Same CWE
10 shownCWE-94
- CVE-2003-1432EG 10.0EPSS p94HIGH
- CVE-2002-0495EG 10.0EPSS p96HIGH
- CVE-1999-0702EG 10.0EPSS p98HIGH
- CVE-1999-0509EG 10.0EPSS p98HIGH
- CVE-2006-1318EG 9.3EPSS p96HIGH
- CVE-2006-1301EG 9.3EPSS p95HIGH
- CVE-2006-1308EG 9.3EPSS p95HIGH
- CVE-2006-1309EG 9.3EPSS p95HIGH
- CVE-2006-1304EG 9.3EPSS p95HIGH
- CVE-2006-1306EG 9.3EPSS p95HIGH
Frequently asked(5)
What is CVE-2023-41362?
When was CVE-2023-41362 disclosed?
Is CVE-2023-41362 actively exploited?
What is the CVSS score of CVE-2023-41362?
How do I remediate CVE-2023-41362?
Dependency Blast Radius
Explore the affected products and dependency analysis for CVE-2023-41362
Is Your Infrastructure Affected by CVE-2023-41362?
EchelonGraph automatically scans your cloud infrastructure and maps CVE exposure using blast radius analysis.