CVE-2020-10819Public exploitNetwork attack vector

Authenticated XSS via LDAP username parameter

Published Mar 22, 2020 · Updated Aug 4, 2024

Cross-site scripting in Nagios XI 5.6.11 allows remote authenticated users to execute script via the LDAP integration username parameter. The LDAP/AD integration renders attacker-controlled username input without adequate output encoding, placing script in an administrator's browser. Exploitation requires authenticated administrator access and browser interaction; the demonstrated consequence is script execution in that user's session.

CVSS severity3.5
Low
EPSS probability71.33%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Cross-site scripting in Nagios XI 5.6.11 allows remote authenticated users to execute script via the LDAP integration username parameter. The LDAP/AD integration renders attacker-controlled username input without adequate output encoding, placing script in an administrator's browser. Exploitation requires authenticated administrator access and browser interaction; the demonstrated consequence is script execution in that user's session.

The record

CVE
CVE-2020-10819
Published
Mar 22, 2020
Updated
Aug 4, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-79, T1189
Attack vector
network
Privileges
admin

Timeline

How it unfolded

  1. Mar 22, 2020CVE publishedPublication date reported by the CVE source.
  2. Aug 4, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectornetwork
Required privilegesadmin

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

3.5NVDAV:N/AC:M/Au:S/C:N/I:P/A:N
4.8NVDCVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesadmin
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
T1189Drive-by Compromise

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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