CVE-2016-11020 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.

CriticalCVSS 9.8 EPSS 2.9%

Published: 2020-02-24 19:04
Updated: 2026-06-17 03:40
Exploit status: No public exploit known

Sign in for asset impact Search another CVE

Description

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.

Affected products

Product	Affected versions	Fixed in
kunena	< 5.0.4	5.0.4

References

github.com patch third-party-advisory
www.kunena.org release-notes vendor-advisory
www.kunena.org release-notes vendor-advisory

CVSS v3.1

9.8 Critical

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Attack Vector: Network
Attack Complexity: Low
Privileges Required: None
User Interaction: None
Scope: Unchanged
Confidentiality: High
Integrity: High
Availability: High

All scores (2)

v3.1 9.8 · nvd@nist.gov
v2.0 7.5 · nvd@nist.gov

Weakness & likelihood

EPSS (exploitation probability, 30 days): 2.88% (percentile 87.1)
CWE: CWE-434

Public exploit references

Metadata only. CVERadar never hosts or runs exploit code.

No public exploit references known.