CVE-2021-46677

Browser script execution via event-filter name

Published Aug 5, 2022 · Updated Jun 2, 2026

Stored XSS in the event-filter name field in Pandora FMS 756 and earlier allows local users to execute JavaScript in another user's browser. Public advisories identify the field but do not disclose the rendering path or the precise missing encoding operation. Exploitation requires high privileges and user interaction; the bounded consequence is script execution in the viewing user's browser context.

CVSS severity6.1
Medium
EPSS probability0.39%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
Coverage for this vulnerability

See if you're affected

Explore vulnerability checks for your environment with Hinoki.

Book a demo

Summary

What happened

Stored XSS in the event-filter name field in Pandora FMS 756 and earlier allows local users to execute JavaScript in another user's browser. Public advisories identify the field but do not disclose the rendering path or the precise missing encoding operation. Exploitation requires high privileges and user interaction; the bounded consequence is script execution in the viewing user's browser context.

The record

CVE
CVE-2021-46677
Published
Aug 5, 2022
Updated
Jun 2, 2026
Vendor
Pandora FMS
Product
Pandora FMS
Classifications
CWE-79, T1059.007
Attack vector
local
Privileges
admin

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

Compare your product and version with the public record. A matching version still requires validation against your environment.

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 vectorlocal
Required privilegesadmin

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 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesadmin
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
T1059.007JavaScript/JScript

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

See the directory against your own environment.

Your stack

Check the software in your environment

Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.

Book a demo