CVE-2021-46678Network attack vector

JavaScript execution via unescaped service name

Published Aug 5, 2022 · Updated Jun 2, 2026

Cross-site scripting in Pandora FMS 756 and earlier allows remote attackers to execute JavaScript through the service name field. The service form renders a supplied service name without adequate output encoding, so a crafted value is interpreted as script in a browser. Exploitation requires a victim with access to the affected web console to view the rendered service; script execution can alter page actions or expose session data.

CVSS severity6.1
Medium
EPSS probability0.39%
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 Pandora FMS 756 and earlier allows remote attackers to execute JavaScript through the service name field. The service form renders a supplied service name without adequate output encoding, so a crafted value is interpreted as script in a browser. Exploitation requires a victim with access to the affected web console to view the rendered service; script execution can alter page actions or expose session data.

The record

CVE
CVE-2021-46678
Published
Aug 5, 2022
Updated
Jun 2, 2026
Vendor
Pandora FMS
Product
Pandora FMS
Classifications
CWE-79, T1059.007
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Aug 5, 2022CVE publishedPublication date reported by the CVE source.
  2. Jun 2, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=v756 <=v756

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Pandora FMS · Pandora FMSversion=v756 <=v756

Published CVSS scores

4.0Artica PFMSCVSS:3.1/AV:L/AC:L/PR:H/UI:R/S:U/C:L/I:L/A:L
6.1NVDCVSS:3.1/AV:N/AC:L/PR:N/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.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

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
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
T1059.007Command and Scripting Interpreter: JavaScript

Public exploit references

No public exploit references are available in this record.

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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