CVE-2023-26820Public exploitNetwork attack vector

Unauthenticated file disclosure via unchecked URL paths

Published Apr 7, 2023 · Updated Feb 12, 2025

Path traversal in Siteproxy 1.0 allows remote attackers to read arbitrary server files through crafted URL paths. The local-file response path in index.js uses the request path without checking that the resolved pathname remains inside the intended directory. No authentication or user interaction is required; successful traversal discloses any file readable by the Siteproxy process, but does not establish file modification or service interruption.

CVSS severity7.5
High
EPSS probability0.80%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Path traversal in Siteproxy 1.0 allows remote attackers to read arbitrary server files through crafted URL paths. The local-file response path in index.js uses the request path without checking that the resolved pathname remains inside the intended directory. No authentication or user interaction is required; successful traversal discloses any file readable by the Siteproxy process, but does not establish file modification or service interruption.

The record

CVE
CVE-2023-26820
Published
Apr 7, 2023
Updated
Feb 12, 2025
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-22, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Apr 7, 2023CVE publishedPublication date reported by the CVE source.
  2. Feb 12, 2025Record 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 privilegesunauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

7.5CISA-ADPCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
7.5NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/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
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-22Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
T1190Exploit Public-Facing Application

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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