SOC status:Duty analyst on shift

UK Cyber Defence
VulnerabilityModified

CVE-2018-17192

The X-Frame-Options headers were applied inconsistently on some HTTP responses, resulting in duplicate or missing security headers.

MEDIUM 6.5EPSS 2.68%

Does this matter?

Lower severity and a low EPSS score (2.68%). Track it; it rarely justifies an emergency change on its own.

Description

The X-Frame-Options headers were applied inconsistently on some HTTP responses, resulting in duplicate or missing security headers. Some browsers would interpret these results incorrectly, allowing clickjacking attacks. Mitigation: The fix to consistently apply the security headers was applied on the Apache NiFi 1.8.0 release. Users running a prior 1.x release should upgrade to the appropriate release.

CVSS 3.0
6.5 MEDIUMCVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N
EPSS
2.68% probability · 86th percentile
Public exploits
None in Exploit-DB
CISA KEV
Not listed
Weakness
CWE-1021
Affected
apache/nifi
Source
security@apache.org
EPSS trend
0%3%5%27 October 2026: 2.68%27 October 202627 October 2026

EPSS 2.7% since 27 October 2026; no change recorded yet. Points are recorded when the score first appears and whenever it moves by a percentage point or more.

Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.