CVE-2021-35479

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

13.15% probability of exploitation activity in the next 30 days.

EPSS percentile

Ranks above 96.0% 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

2021-07-27 11:47Z5 YR AGO

Last updated

2024-08-04 00:40Z2 YR AGO

Reserved

2021-06-24

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

8ca4eedf919cdae595d585eae1e87acb4754c311e30d1a8acb9a221b41469d38

• www.nagios.comhttps://www.nagios.com/downloads/nagios-log-server/change-log/x_refsource_MISC
• research.nccgroup.comhttps://research.nccgroup.com/?research=Technical%20advisoriesx_refsource_MISC
• research.nccgroup.comhttps://research.nccgroup.com/2021/07/22/technical-advisory-stored-and-reflected-xss-vulnerability-in-nagios-log-server-cve-2021-35478cve-2021-35479/x_refsource_MISC