CVE-2023-24034Network attack vectorHinoki check available

User redirection via untrusted Twilio destination

Published Sep 14, 2026 · Updated Sep 14, 2026

Open redirect in Nagios XI before 5.9.3 allows remote attackers to send users to a malicious site through the Twilio component. The twilio_ajax_handler.php endpoint redirects the browser to an untrusted destination; Nagios has not published the responsible parameter or validation logic. Exploitation requires a user to follow a crafted link, enabling deceptive navigation without reported server compromise.

CVSS severityUnavailable
Unscored
EPSS probability0.39%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkAvailable
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Summary

What happened

Open redirect in Nagios XI before 5.9.3 allows remote attackers to send users to a malicious site through the Twilio component. The twilio_ajax_handler.php endpoint redirects the browser to an untrusted destination; Nagios has not published the responsible parameter or validation logic. Exploitation requires a user to follow a crafted link, enabling deceptive navigation without reported server compromise.

The record

CVE
CVE-2023-24034
Published
Sep 14, 2026
Updated
Sep 14, 2026
Vendor
Nagios Enterprises, LLC
Product
Nagios XI
Classifications
T1566.002
Attack vector
network
Privileges
Unavailable

Timeline

How it unfolded

  1. Sep 14, 2026CVE publishedPublication date reported by the CVE source.
  2. Sep 14, 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=0 <5.9.3

What conditions does exploitation require?

Attack vectornetwork
Required privilegesUnavailable in this record.

What is affected?

Nagios Enterprises, LLC · Nagios XIversion=0 <5.9.3

Published CVSS scores

No CVSS assessment is available in this record.

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
PrivilegesUnavailable
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

T1566.002Spearphishing Link

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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