CVE-2023-35931Public exploitNetwork attack vector

Environment variable disclosure via unescaped CMD percent signs

Published Jun 23, 2023 · Updated Dec 5, 2024

Information disclosure in Eric Cornelissen Shescape before 1.7.1 allows remote authenticated users to read environment variables. The CMD escaping routines fail to prefix percent signs in input processed by quote, quoteAll, escape, or interpolation-enabled escapeAll, so CMD expands tokens such as %PATH%. Exploitation requires a consuming application on Windows to invoke CMD with an affected API and attacker-controlled input; the demonstrated consequence is read-only variable disclosure.

CVSS severity3.1
Low
EPSS probability0.81%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
Coverage for this vulnerability

See if you're affected

Explore vulnerability checks for your environment with Hinoki.

Book a demo

Summary

What happened

Information disclosure in Eric Cornelissen Shescape before 1.7.1 allows remote authenticated users to read environment variables. The CMD escaping routines fail to prefix percent signs in input processed by quote, quoteAll, escape, or interpolation-enabled escapeAll, so CMD expands tokens such as %PATH%. Exploitation requires a consuming application on Windows to invoke CMD with an affected API and attacker-controlled input; the demonstrated consequence is read-only variable disclosure.

The record

CVE
CVE-2023-35931
Published
Jun 23, 2023
Updated
Dec 5, 2024
Vendor
Eric Cornelissen
Product
Shescape
Classifications
CWE-200, CWE-526, T1552
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Jun 23, 2023CVE publishedPublication date reported by the CVE source.
  2. Dec 5, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

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

  1. Affected versionversion=< 1.7.1

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Eric Cornelissen · Shescapeversion=< 1.7.1

Published CVSS scores

3.1GitHubCVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:N
4.3GitLab Advisory DatabaseCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/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
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-200Exposure of Sensitive Information to an Unauthorized Actor
CWE-526Cleartext Storage of Sensitive Information in an Environment Variable
T1552Unsecured Credentials

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

See the directory against your own environment.

Your stack

Check the software in your environment

Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.

Book a demo