CVE-2023-6013Network attack vector

Local file access via undisclosed stored XSS

Published Nov 16, 2023 · Updated Nov 27, 2024

Stored XSS in H2O.ai H2O-3 allows remote attackers to access local files through crafted content saved by the service. Public records do not identify the affected endpoint, storage field, rendering sink, or operation that turns stored content into local-file access. Published assessments disagree on whether authentication and user interaction are required; the reported consequence is local-file access, not service interruption.

CVSS severity5.4
Medium
EPSS probability0.75%
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 H2O.ai H2O-3 allows remote attackers to access local files through crafted content saved by the service. Public records do not identify the affected endpoint, storage field, rendering sink, or operation that turns stored content into local-file access. Published assessments disagree on whether authentication and user interaction are required; the reported consequence is local-file access, not service interruption.

The record

CVE
CVE-2023-6013
Published
Nov 16, 2023
Updated
Nov 27, 2024
Vendor
H2O.ai
Product
H2O-3
Classifications
CWE-79
Attack vector
network
Privileges
Unavailable

Timeline

How it unfolded

  1. Nov 16, 2023CVE publishedPublication date reported by the CVE source.
  2. Nov 27, 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?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=unspecified <=latest

What conditions does exploitation require?

Attack vectornetwork
Required privilegesUnavailable in this record.

What is affected?

H2O.ai · H2O-3version=unspecified <=latest

Published CVSS scores

5.4NIST NVDCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
9.3huntr.devCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:H/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
PrivilegesUnavailable
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

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

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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