CVE-2023-44275Public exploitNetwork attack vector

Cross-user script execution via stored column count

Published Sep 28, 2023 · Updated Sep 23, 2024

Stored XSS in the Lobby Dashboard of OPNsense before 23.7.5 allows remote authenticated users to execute script in another user's browser. The index.php POST handler stores column_count without validation, then inserts the value unescaped into a hidden input on each dashboard visit. An account limited to the Lobby Dashboard can persist the payload; execution requires another user, including an administrator, to open that dashboard.

CVSS severity5.4
Medium
EPSS probability0.50%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Stored XSS in the Lobby Dashboard of OPNsense before 23.7.5 allows remote authenticated users to execute script in another user's browser. The index.php POST handler stores column_count without validation, then inserts the value unescaped into a hidden input on each dashboard visit. An account limited to the Lobby Dashboard can persist the payload; execution requires another user, including an administrator, to open that dashboard.

The record

CVE
CVE-2023-44275
Published
Sep 28, 2023
Updated
Sep 23, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-79, T1189
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Sep 28, 2023CVE publishedPublication date reported by the CVE source.
  2. Sep 23, 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 privilegesauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

8.0X41 D-SecCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H
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 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
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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