CVE-2020-18671

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

0.81% probability of exploitation activity in the next 30 days.

EPSS percentile

Ranks above 54.4% of scored records. A rank, not a probability.

NVD base score

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

NVD CVSS vector

CVSS:3.1/AV:N/AC:L/PR:L/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

2021-06-24 18:14Z5 YR AGO

Last updated

2024-08-04 14:00Z2 YR AGO

Reserved

2020-08-13

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

b779ded71e8b6373f55c1ada0dd8afb2fd70f97e830102ec2d6f81f468a02651

• github.comhttps://github.com/roundcube/roundcubemail/issues/7406x_refsource_MISC
• roundcube.nethttps://roundcube.net/news/2020/06/02/security-updates-1.4.5-and-1.3.12x_refsource_MISC
• lorexxar.cnhttps://lorexxar.cn/2020/06/10/roundcube-mail-xss/#store-xss-in-smtp-configx_refsource_MISC