CVE-2023-41362 json
MyBB before 1.8.36 allows Code Injection by users with certain high privileges.
published 2023-08-29 3 y ago modified 2026-06-17 4 mo ago also EUVD-2023-45865
- cvss
- 7.2
- version 3.1, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 2.1%
- EPSS 2.1% chance of exploitation in 30 days, percentile 81%
- public exploits
- 0
- none known
Summary
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.
Patch / fix
- mybb mybb 1.8.36
CISA SSVC
- Exploitation
- Proof of concept is public
- Automatable
- no
- Technical impact
- total
- Assessed
- 2 y ago
Exploit prediction
2.05% chance of exploitation in the next 30 days, higher than 81% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 3.1 | 7.2 | CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H |
Classification
- Weakness
-
- CWE-94 Improper Control of Generation of Code
References
-
github.com
/mybb/mybb/commit/a43a6f22944e769a6eabc58c39e7bc18c1cab4ca.patch
patch
-
github.com
/mybb/mybb/security/advisories/GHSA-pr74-wvp3-q6f5
patch, third-party-advisory
-
mybb.com
/versions/1.8.36/
release-notes
- blog.sorcery.ie /posts/mybb_acp_rce/
Sources
- CVE List CVE-2023-41362
- NVD CVE-2023-41362
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