CVE-2016-11020 json
Kunena before 5.0.4 does not restrict avatar file extensions to gif, jpeg, jpg, and png.
published 2020-02-24 6 y ago modified 2026-06-17 4 mo ago also EUVD-2016-2011
- cvss
- 9.8
- version 3.1, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 2.9%
- EPSS 2.9% chance of exploitation in 30 days, percentile 86%
- public exploits
- 0
- none known
Summary
Kunena before 5.0.4 does not restrict avatar file extensions to gif, jpeg, jpg, and png. This can lead to XSS and remote code execution.
Patch / fix
Exploit prediction
2.88% chance of exploitation in the next 30 days, higher than 86% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 3.1 | 9.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
| NVD | 2.0 | 7.5 | AV:N/AC:L/Au:N/C:P/I:P/A:P |
Classification
- Weakness
-
- CWE-434 Unrestricted Upload of File with Dangerous Type
References
-
github.com
/Kunena/Kunena-Forum/pull/5028
patch, third-party-advisory
-
kunena.org
/bugs/changelog
release-notes, vendor-advisory
-
kunena.org
/blog/179-kunena-5-0-4-released
release-notes, vendor-advisory
Sources
- CVE List CVE-2016-11020
- NVD CVE-2016-11020
Fencer Vulns 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.