Home/CVE/MyBB is a free and open source forum software. The backup management module of the Admin CP may accept `.htaccess` as th
CVE

CVE-2024-23335

MyBB is a free and open source forum software. The backup management module of the Admin CP may accept `.htaccess` as th

MyBB is a free and open source forum software. The backup management module of the Admin CP may accept .htaccess as the name of the backup file to be deleted, which may expose the stored backup files over HTTP on Apache servers. MyBB 1.8.38 resolves this issue.

Users are advised to upgrade. There are no known workarounds for this vulnerability.

MEDIUM · CVSS 4.7 EPSS 0.00259
Monitor
  • No active-exploitation, high-EPSS, or public-exploit signals - routine patching cadence
Sigma rules0 YARA rules0
⬡

Weakness Classification

CWE-20Improper Input Validation
▤

Affected Products & Versions

1
mybb< 1.8.38
▣

Scoring & Timeline

4.7
MEDIUM · CVSS v3.1 · security-advisories@github.com
View on NVD
Attack Vector
Network Adjacent Local Physical
Attack Complexity
Low High
Privileges Required
None Low High
User Interaction
None Required
Scope
Unchanged Changed
Confidentiality
None Low High
Integrity
None Low High
Availability
None Low High
Published to NVD01 May 2024 · 07:15 AM
CVSS VectorCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:L/A:L
SSVC triage · cisa-vulnrichment
Exploitation
none
Automatable
no
Technical impact
partial
SSVC asks the questions that actually drive patch urgency: is it being exploited, can attacks be automated, and how total is the impact.
🔗

References & Sources

3
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
https://github.com/mybb/mybb/commit/450259e501b94c9d483efb167cb2bf875605e111.patchPatch
https://github.com/mybb/mybb/security/advisories/GHSA-94xr-g4ww-j47rVendor Advisory
https://mybb.com/versions/1.8.38ProductRelease Notes
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