Not analysed yet
We haven’t published our own analysis of this CVE. If a person reviews it, this page will say what’s affected and what has to be true for it to matter.
Severity and exploitation
| Score | Rating | CVSS | Vector | Source |
|---|---|---|---|---|
| 7.2 | High | 3.1 | CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H | CNA (GitHub_M) |
- CISA KEV Not listed.
- EPSS 0.78, the 99th percentile, on 5 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.
Timeline
Sources
References from the CNA
- github.com/mybb/mybb/security/advisories/GHSA-876v-gwgh-w57f
- github.com/mybb/mybb/commit/92012b9831b330714b9f9b4646a98784113489c1
- mybb.com/versions/1.8.30/
- www.zerodayinitiative.com/advisories/ZDI-22-503/
- packetstormsecurity.com/files/167082/MyBB-1.8.29-Remote-Code-Execution.html
- packetstormsecurity.com/files/167333/MyBB-Admin-Control-Remote-Code-Execution.html