CVE-2023-37657Public exploitNetwork attack vector

Administrator data disclosure via stored header script

Published Jul 11, 2023 · Updated Nov 8, 2024

Stored XSS in TwoNav 2.0.28-20230624 allows remote authenticated users to run script in an administrator's browser. The user header-code setting stores unneutralized script and renders it on the user's page, where an administrator's visit executes the payload. Free registration supplies the required account, and administrator interaction exposes same-origin data, including phpinfo API output and session cookies.

CVSS severity5.4
Medium
EPSS probability0.38%
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 TwoNav 2.0.28-20230624 allows remote authenticated users to run script in an administrator's browser. The user header-code setting stores unneutralized script and renders it on the user's page, where an administrator's visit executes the payload. Free registration supplies the required account, and administrator interaction exposes same-origin data, including phpinfo API output and session cookies.

The record

CVE
CVE-2023-37657
Published
Jul 11, 2023
Updated
Nov 8, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-79, T1539
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Jul 11, 2023CVE publishedPublication date reported by the CVE source.
  2. Nov 8, 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

5.4NVDCVSS: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.

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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
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
T1539Steal Web Session Cookie

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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