CVE-2023-39612Public exploitNetwork attack vector

Administrator account takeover via inline raw files

Published Sep 16, 2023 · Updated Sep 25, 2024

Stored XSS in FileBrowser before 2.23.0 allows remote authenticated users to take over an administrator account via a crafted file URL. The /api/raw rawFileHandler serves attacker-controlled HTML inline and allows same-origin JavaScript under a CSP that permits self-hosted scripts. A low-privileged account and administrator interaction are required; successful exploitation exposes administrator session data and privileges.

CVSS severity9.0
Critical
EPSS probability0.73%
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 FileBrowser before 2.23.0 allows remote authenticated users to take over an administrator account via a crafted file URL. The /api/raw rawFileHandler serves attacker-controlled HTML inline and allows same-origin JavaScript under a CSP that permits self-hosted scripts. A low-privileged account and administrator interaction are required; successful exploitation exposes administrator session data and privileges.

The record

CVE
CVE-2023-39612
Published
Sep 16, 2023
Updated
Sep 25, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-79, T1566.002
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Sep 16, 2023CVE publishedPublication date reported by the CVE source.
  2. Sep 25, 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

9.0NIST NVDCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H

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 exploitPublished

Weakness, pattern, technique

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
T1566.002Spearphishing Link

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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