CVE-2023-53979MyBB 1.8.32 contains a chained vulnerability that allows authenticated administrators to bypass avatar upload restrictions and execute arbitrary code.
Updated under an hour ago ()
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MyBB 1.8.32 contains a chained vulnerability that allows authenticated administrators to bypass avatar upload restrictions and execute arbitrary code. Attackers can modify upload path settings, upload a malicious PHP-embedded image file, and execute commands through the language configuration editing interface.
- CVSS
- 8.8 HIGH (v3.1, NVD)CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- Weakness (CWE)
- CWE-22
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- Not given
- NVD analysis
- Modified
- Record last updated
- Jun 17, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
mybb mybb mybb:mybb | 1.8.32 | NVD |
References
- https://fdlucifer.github.io/2023/01/17/mybb1-8-32-LFI-RCE/exploit, third-party-advisory
- https://mybb.com/product
- https://www.exploit-db.com/exploits/51213exploit
- https://www.vulncheck.com/advisories/mybb-authenticated-remote-code-execution-via-chained-vulnerabilitiesexploit, third-party-advisory
- https://www.cve.org/CVERecord?id=CVE-2022-45867
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.