CVE-2018-17866

Exploitation

Not assessed. CISA has not published an exploitation assessment for this record, and it is not in the KEV catalog. That is an absence of assessment, not a finding of no risk.

SSVC decision

Not assessed by CISA

EPSS probability

1.65% probability of exploitation activity in the next 30 days.

EPSS percentile

Ranks above 74.8% of scored records. A rank, not a probability.

NVD base score

6.1 (CVSS v3.x), scored by the NVD independently of the CNA.

NVD CVSS vector

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

NVD analysis status

Modified. NVD last modified this record on 2026-06-17.

Red Hat severity

No Red Hat rating. Red Hat rates the CVEs that affect its products.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

Published

2018-10-09 22:00Z7 YR AGO

Last updated

2024-08-05 11:01Z2 YR AGO

Reserved

2018-10-01

Assigning CNA

mitre

Record state

PUBLISHED

Severity

Not rated by the issuing CNA

CNA CVSS vector

Not published by the issuing CNA

Weaknesses

• CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')Base

Data version

5.1

Document digest

b06bd15b1fb82725bb9e3bba73ca5a968dc80fd86272563efff8c3716593462e

• serhack.mehttps://serhack.me/articles/ultimate-member-xss-security-issuex_refsource_MISC
• wordpress.orghttps://wordpress.org/plugins/ultimate-member/#developersx_refsource_CONFIRM
• wpvulndb.comhttps://wpvulndb.com/vulnerabilities/9615x_refsource_MISC