CVE-2017-8103 json
In MyBB before 1.8.11, the Email MyCode component allows XSS, as demonstrated by an onmouseover event.
published 2017-04-24 9 y ago modified 2026-06-17 4 mo ago also EUVD-2017-17066
- cvss
- 6.1
- version 3.0, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.7%
- EPSS 0.7% chance of exploitation in 30 days, percentile 53%
- public exploits
- 0
- none known
Summary
In MyBB before 1.8.11, the Email MyCode component allows XSS, as demonstrated by an onmouseover event.
Patch / fix
Exploit prediction
0.71% chance of exploitation in the next 30 days, higher than 53% of all scored CVEs (FIRST EPSS, 2026-11-09).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 3.0 | 6.1 | CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N |
| NVD | 2.0 | 4.3 | AV:N/AC:M/Au:N/C:N/I:P/A:N |
Classification
- Weakness
-
- CWE-79 Improper Neutralization of Input During Web Page Generation
References
-
blog.mybb.com
/2017/04/04/mybb-1-8-11-merge-system-1-8-11-release/
patch, vendor-advisory
-
seclists.org
/fulldisclosure/2017/Apr/53
third-party-advisory, vdb-entry
Sources
- CVE List CVE-2017-8103
- NVD CVE-2017-8103
Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.