CVE-2017-8439

FAUCET Score

CVE-2017-8439 describes a Cross-Site Scripting (XSS) vulnerability in Kibana version 5.4.0's Time Series Visual Builder. This flaw could allow an unauthenticated attacker to steal sensitive information from Kibana users. With a CVSS score of 6.1 (Medium), the attack requires user interaction but has low impact on confidentiality and integrity. There is no evidence of active exploitation, publicly available exploit code, or significant community discussion surrounding this CVE.

Impacted Technologies

Vendor	Product	Version(s)	CPE
		5.4.0CPE matchmatch criteria	cpe:2.3:a:elastic:kibana:5.4.0:::::::*

CVSS Data

CVSS version used by this source: 3.0

6.1MEDIUM

CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

REQUIRED

Scope

CHANGED

Confidentiality Impact

LOW

Integrity Impact

LOW

Availability Impact

NONE

Exploitability Score

2.8

Impact Score

2.7

CvssVersion

3.0

Exploit Intelligence

EPSS Score

0.99%

Probability of exploitation in next 30 days

EPSS Percentile

58.9%

Percentile rank of EPSS score among Peer Group

As of 2026-07-27

Model: v2026.06.15

This CVE's current EPSS score of 0.0099 is in the 71st percentile among its peer group of 26,234 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.1 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Vendor Advisories (1)

redhatCVE-2017-8439Moderate

kibana: XSS in Time Series Visual Builder could allow an attacket to obtain sensitive user information

Jun 5, 2017

References

discuss.elastic.co / t/elastic-stack-5-4-1-and-5-3-3-security-updates/87952

MitigationVendor Advisory

elastic.co / blog/kibana-5-4-1-and-5-3-3-released

Release NotesVendor Advisory

elastic.co / community/security

Vendor Advisory