CVE-2021-47756Public exploit

Local root execution via writable sudo target

Published Jan 15, 2026 · Updated Jan 15, 2026

Local privilege escalation in Laravel Valet 1.1.4 through 2.0.3 allows local users to execute arbitrary code as root on macOS. The installer creates a passwordless sudoers rule for /usr/local/bin/valet even though Composer links that path to a user-writable script. A local administrator who can modify the linked script can run the altered command through sudo and obtain a root shell without another password prompt.

CVSS severity8.4
High
EPSS probability0.21%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Local privilege escalation in Laravel Valet 1.1.4 through 2.0.3 allows local users to execute arbitrary code as root on macOS. The installer creates a passwordless sudoers rule for /usr/local/bin/valet even though Composer links that path to a user-writable script. A local administrator who can modify the linked script can run the altered command through sudo and obtain a root shell without another password prompt.

The record

CVE
CVE-2021-47756
Published
Jan 15, 2026
Updated
Jan 15, 2026
Vendor
Laravel
Product
Laravel Valet
Classifications
CWE-732, CAPEC-234, CAPEC-642, T1548.003
Attack vector
local
Privileges
admin

Timeline

How it unfolded

  1. Jan 15, 2026CVE publishedPublication date reported by the CVE source.
  2. Jan 15, 2026Record 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=1.1.4 to 2.0.3

What conditions does exploitation require?

Attack vectorlocal
Required privilegesadmin

What is affected?

Laravel · Laravel Valetversion=1.1.4 to 2.0.3

Published CVSS scores

8.4VulnCheckCVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
8.4VulnCheckCVSS:4.0/AV:L/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA: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)
Vectorlocal
Privilegesadmin
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-732Incorrect Permission Assignment for Critical Resource
CAPEC-234Hijacking a privileged process
CAPEC-642Replace Binaries
T1548.003Abuse Elevation Control Mechanism: Sudo and Sudo Caching

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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