CVE-2026-30812Network attack vector

Stored XSS via event comment filter bypass

Published Apr 13, 2026 · Updated Apr 13, 2026

Stored cross-site scripting in Pandora FMS 777 through 800 allows remote authenticated users to inject script through event comments. The event-comment filter accepts crafted markup that bypasses its neutralization logic, so the saved comment is rendered as executable browser content; the vendor has not published the specific filter rule or payload form. A low-privileged account can store a crafted comment, and execution occurs when another user views the affected event, exposing or modifying data in that browser session.

CVSS severity5.4
Medium
EPSS probability0.18%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Stored cross-site scripting in Pandora FMS 777 through 800 allows remote authenticated users to inject script through event comments. The event-comment filter accepts crafted markup that bypasses its neutralization logic, so the saved comment is rendered as executable browser content; the vendor has not published the specific filter rule or payload form. A low-privileged account can store a crafted comment, and execution occurs when another user views the affected event, exposing or modifying data in that browser session.

The record

CVE
CVE-2026-30812
Published
Apr 13, 2026
Updated
Apr 13, 2026
Vendor
Pandora FMS
Product
Pandora FMS
Classifications
CWE-79, T1059.007
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Apr 13, 2026CVE publishedPublication date reported by the CVE source.
  2. Apr 13, 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=777 <=800

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Pandora FMS · Pandora FMSversion=777 <=800

Published CVSS scores

2.1Artica PFMSCVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:P/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N
5.4NIST NVDCVSS:3.1/AV:N/AC:L/PR:L/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)
Vectornetwork
Privilegesauthenticated
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/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

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Your stack

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