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CVE-2020-7729

Arbitrary Code Execution

7.1 HighFix available

The package grunt before 1.3.0 are vulnerable to Arbitrary Code Execution due to the default usage of the function load() instead of its secure replacement safeLoad() of the package js-yaml inside grunt.file.readYAML.

Attack profile

How easy it is to exploit

Attack vector
Network
Complexity
High
Privileges needed
Low
User interaction
Required

What an attacker can affect

Confidentiality
High
Integrity
High
Availability
High

Exploit likelihood

2.30%Down 0.2 points since Apr 14, 2021
90%50%10%1%

What each source reports

CVE List Score used 7.1

Arbitrary Code Execution

The package grunt before 1.3.0 are vulnerable to Arbitrary Code Execution due to the default usage of the function load() instead of its secure replacement safeLoad() of the package js-yaml inside grunt.file.readYAML.

Record
CVE-2020-7729
CVSS 3.1
7.1 HighCVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:H/I:H/A:H/RL:O
Updated
2026-11-02
EUVDEUVD-2021-1133 7.1

The package grunt before 1.3.0 are vulnerable to Arbitrary Code Execution due to the default usage of the function load() instead of its secure replacement safeLoad() of the package js-yaml inside grunt.file.readYAML.

Record
EUVD-2021-1133
CVSS 3.1
7.1 HighCVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:H/I:H/A:H/RL:O
Updated
2026-11-03
GitHub AdvisoriesGHSA-m5pj-vjjf-4m3h 7.1

Arbitrary Code Execution in grunt

The package grunt before 1.3.0 are vulnerable to Arbitrary Code Execution due to the default usage of the function load() instead of its secure replacement safeLoad() of the package js-yaml inside grunt.file.readYAML.

Record
GHSA-m5pj-vjjf-4m3h
CVSS 3.1
7.1 HighCVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:H/I:H/A:H
Weakness
CWE-1188
Updated
2026-11-02
NVD 7.1

The package grunt before 1.3.0 are vulnerable to Arbitrary Code Execution due to the default usage of the function load() instead of its secure replacement safeLoad() of the package js-yaml inside grunt.file.readYAML.

Record
CVE-2020-7729
CVSS 3.1
7.1 HighCVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:H/I:H/A:H
CVSS 2.0
4.6 MediumAV:N/AC:H/Au:S/C:P/I:P/A:P
Weakness
CWE-1188
Updated
2026-11-02
OSVAZL-44379 7.1

CVE-2020-7729 affecting package js-jquery 3.5.0-4

The package grunt before 1.3.0 are vulnerable to Arbitrary Code Execution due to the default usage of the function load() instead of its secure replacement safeLoad() of the package js-yaml inside grunt.file.readYAML.

Record
AZL-44379
CVSS 3.1
7.1 HighCVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:H/I:H/A:H
Updated
2026-11-05
OSV 7.1

The package grunt before 1.3.0 are vulnerable to Arbitrary Code Execution due to the default usage of the function load() instead of its secure replacement safeLoad() of the package js-yaml inside grunt.file.readYAML.

Record
CVE-2020-7729
CVSS 3.1
7.1 HighCVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:H/I:H/A:H
Updated
2026-11-02
Show 7 moreShow less
OSVDEBIAN-CVE-2020-7729 7.1

The package grunt before 1.3.0 are vulnerable to Arbitrary Code Execution due to the default usage of the function load() instead of its secure replacement safeLoad() of the package js-yaml inside grunt.file.readYAML.

Record
DEBIAN-CVE-2020-7729
CVSS 3.1
7.1 HighCVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:H/I:H/A:H
Updated
2026-11-02
OSVGHSA-m5pj-vjjf-4m3h 7.1

Arbitrary Code Execution in grunt

The package grunt before 1.3.0 are vulnerable to Arbitrary Code Execution due to the default usage of the function load() instead of its secure replacement safeLoad() of the package js-yaml inside grunt.file.readYAML.

Record
GHSA-m5pj-vjjf-4m3h
CVSS 3.1
7.1 HighCVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:H/I:H/A:H
Weakness
CWE-1188
Updated
2026-11-02
OSVOESA-2022-1544 7.1

nodejs-grunt security update

Grunt is the JavaScript task runner. Why use a task runner? In one word: automation. The less work you have to do when performing repetitive tasks like minification, compilation, unit testing, linting, etc, the easier your job becomes. After you've configured it, a task runner can do most of that mundane work for you with basically zero effort.

Security Fix(es):

The package grunt before 1.3.0 are vulnerable to Arbitrary Code Execution due to the default usage of the function load() instead of its secure replacement safeLoad() of the package js-yaml inside grunt.file.readYAML.(CVE-2020-7729)

Record
OESA-2022-1544
CVSS 3.1
7.1 HighCVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:H/I:H/A:H
Updated
2026-11-02
OSVOESA-2022-2048 7.1

nodejs-grunt security update

Grunt is the JavaScript task runner. Why use a task runner? In one word: automation. The less work you have to do when performing repetitive tasks like minification, compilation, unit testing, linting, etc, the easier your job becomes. After you've configured it, a task runner can do most of that mundane work for you with basically zero effort.

Security Fix(es):

The package grunt before 1.3.0 are vulnerable to Arbitrary Code Execution due to the default usage of the function load() instead of its secure replacement safeLoad() of the package js-yaml inside grunt.file.readYAML.(CVE-2020-7729)

Record
OESA-2022-2048
CVSS 3.1
7.1 HighCVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:H/I:H/A:H
Updated
2026-11-02
OSVUBUNTU-CVE-2020-7729 7.1

The package grunt before 1.3.0 are vulnerable to Arbitrary Code Execution due to the default usage of the function load() instead of its secure replacement safeLoad() of the package js-yaml inside grunt.file.readYAML.

Record
UBUNTU-CVE-2020-7729
CVSS 3.1
7.1 HighCVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:H/I:H/A:H
Updated
2026-11-02
OSVUSN-4595-1 No score

grunt vulnerability

It was discovered that Grunt did not properly load yaml files. An attacker could possibly use this to execute arbitrary code. (CVE-2020-7729)

Record
USN-4595-1
Updated
2026-11-02
OSVUSN-5847-1 No score

grunt vulnerabilities

It was discovered that Grunt was not properly loading YAML files before parsing them. An attacker could possibly use this issue to execute arbitrary code. (CVE-2020-7729)

It was discovered that Grunt was not properly handling symbolic links when performing file copy operations. An attacker could possibly use this issue to expose sensitive information or execute arbitrary code. (CVE-2022-0436)

It was discovered that there was a race condition in the Grunt file copy function, which could lead to an arbitrary file write. An attacker could possibly use this issue to perform a local privilege escalation attack or to execute arbitrary code. (CVE-2022-1537)

Record
USN-5847-1
Updated
2026-11-02

Affected products

Affected packages

Affected packages
PackageAffectedFixed
grunt
npm
before 1.3.0
1.3.0
js-jquery
Azure Linux:3
through 3.5.0-4 None known
grunt
Debian:12
before 1.3.0-1
1.3.0-1
grunt
Debian:13
before 1.3.0-1
1.3.0-1
grunt
Debian:14
before 1.3.0-1
1.3.0-1
grunt
Debian:9
before 1.0.1-5+deb9u1, plus listed versions
1.0.1-5
1.0.1-5+deb9u1
nodejs-grunt
openEuler:20.03-LTS-SP1
before 1.0.1-2.oe1
1.0.1-2.oe1
nodejs-grunt
openEuler:20.03-LTS-SP2
before 1.0.1-2.oe1
1.0.1-2.oe1
nodejs-grunt
openEuler:20.03-LTS-SP3
before 1.0.1-2.oe1
1.0.1-2.oe1
nodejs-grunt
openEuler:22.03-LTS
before 1.0.1-5.oe2203
1.0.1-5.oe2203
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Affected packages
PackageAffectedFixed
grunt
Ubuntu:18.04:LTS
before 1.0.1-8ubuntu0.1, plus listed versions
1.0.1-51.0.1-61.0.1-71.0.1-8
1.0.1-8ubuntu0.1
grunt
Ubuntu:Pro:20.04:LTS
before 1.0.4-2ubuntu0.1~esm1, plus listed versions
1.0.1-91.0.4-2
1.0.4-2ubuntu0.1~esm1
grunt
Ubuntu:Pro:18.04:LTS
From an advisory covering 3 CVEs
before 1.0.1-8ubuntu0.1+esm1, plus listed versions
1.0.1-51.0.1-61.0.1-71.0.1-81.0.1-8ubuntu0.1
1.0.1-8ubuntu0.1+esm1
grunt
Ubuntu:Pro:20.04:LTS
From an advisory covering 3 CVEs
before 1.0.4-2ubuntu0.1~esm1, plus listed versions
1.0.1-91.0.4-2
1.0.4-2ubuntu0.1~esm1
grunt
Ubuntu:Pro:22.04:LTS
From an advisory covering 3 CVEs
before 1.4.1-2ubuntu0.1~esm1, plus listed versions
1.3.0-11.3.0-21.4.1-11.4.1-2
1.4.1-2ubuntu0.1~esm1

History

History
RecordedChangedSources
affected
factsOSV
aliases, publishedEUVD
first indexedCVE List, GitHub Advisories, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2020-7729 is a high vulnerability (CVSS 7.1) in Gruntjs Grunt, published September 3, 2020. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 2.30%, the 83rd percentile. Fixed in grunt 1.3.0.

References

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