CVE-2026-59113Network attack vector

Remote code execution via protocol handler launch

Published Aug 11, 2026 · Updated Aug 25, 2026

Missing authorization in Microsoft Visual Studio Code before 1.132.1 allows remote attackers to execute code via a crafted web page. The hidden web content loader behind the Fetch Web Page tool lets fetched content launch operating-system protocol handlers through window opens or untrusted frame navigation, and extension URL overrides can run before URI trust approval. Exploitation requires user interaction to fetch attacker-controlled content, after which arbitrary code runs with the local user's VS Code privileges.

CVSS severity8.8
High
EPSS probability0.69%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Missing authorization in Microsoft Visual Studio Code before 1.132.1 allows remote attackers to execute code via a crafted web page. The hidden web content loader behind the Fetch Web Page tool lets fetched content launch operating-system protocol handlers through window opens or untrusted frame navigation, and extension URL overrides can run before URI trust approval. Exploitation requires user interaction to fetch attacker-controlled content, after which arbitrary code runs with the local user's VS Code privileges.

The record

CVE
CVE-2026-59113
Published
Aug 11, 2026
Updated
Aug 25, 2026
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-862, T1203
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Aug 11, 2026CVE publishedPublication date reported by the CVE source.
  2. Aug 25, 2026Record 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

8.8GitHub Security AdvisoryCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/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 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 exploitUnconfirmed

Weakness, pattern, technique

CWE-862Missing Authorization
T1203Exploitation for Client Execution

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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