CVE-2021-35478
MEDIUM
5.4
CVSS Score
Published: July 27, 2021 at 11:44 AM UTC
Updated: June 17, 2026 at 03:57 AM UTC
1 product affected across 1 vendorLog Server
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Severity
MEDIUM5.4
Exploit prediction
EPSS 77%
Description
Nagios Log Server before 2.1.9 contains Reflected XSS in the dropdown box for the alert history and audit log function. All parameters used for filtering are affected. This affects users who open a crafted link or third-party web page.
Affected
Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.
v < 2.1.9
Affected range stops below 2.1.9, so it looks safe — our inference, not a vendor statement
Remediation
No guide yetNo remediation guidance has been written for this CVE yet. What the record does show:
Patch and advisory references
References (3)
x_refsource_MISCExploitThird Party Advisory
Source: [email protected]
https://research.nccgroup.com/2021/07/22/technical-advisory-stored-and-reflected-xss-vulnerability-in-nagios-log-server-cve-2021-35478cve-2021-35479/x_refsource_MISCThird Party Advisory
Source: [email protected]
https://research.nccgroup.com/?research=Technical%20advisoriesx_refsource_MISCRelease NotesVendor Advisory
Source: [email protected]
https://www.nagios.com/downloads/nagios-log-server/change-log/CVSS
- Attack Vector
- NETWORK
- Complexity
- LOW
- Privileges
- LOW
- User Interaction
- REQUIRED
- Scope
- CHANGED
- Confidentiality
- LOW
- Integrity
- LOW
- Availability
- NONE
Vector?
Quick Info
StatusMODIFIED
CWE
CWE-79
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