pug-2.0.4.tgz: 4 vulnerabilities (highest severity is: 8.1)

[mend-for-github-com]

Vulnerable Library - pug-2.0.4.tgz

A clean, whitespace-sensitive template language for writing HTML

Library home page: https://registry.npmjs.org/pug/-/pug-2.0.4.tgz

Path to dependency file: /package.json

Path to vulnerable library: /node_modules/pug/package.json

Found in HEAD commit: b3a60f2fbb6a737eb638b50bba11114a200c71e8

Vulnerabilities

Vulnerability	Severity	CVSS	Exploit Maturity	EPSS	Dependency	Type	Fixed in (pug version)	Remediation Possible**	Reachability
CVE-2021-21353	Medium	6.8	Not Defined	1.3000001%	pug-2.0.4.tgz	Direct	pug - 3.0.1,pug-code-gen - 3.0.2,pug-code-gen - 2.0.3	❌	Unreachable
CVE-2026-4800	High	8.1	Not Defined	0.1%	lodash-4.17.23.tgz	Transitive	N/A*	❌
CVE-2024-36361	Medium	6.8	Not Defined	0.3%	detected in multiple dependencies	Direct	N/A	❌
CVE-2026-2950	Medium	6.5	Not Defined	0.0%	lodash-4.17.23.tgz	Transitive	N/A*	❌

*For some transitive vulnerabilities, there is no version of direct dependency with a fix. Check the "Details" section below to see if there is a version of transitive dependency where vulnerability is fixed.

**In some cases, Remediation PR cannot be created automatically for a vulnerability despite the availability of remediation

Details

CVE-2021-21353

Vulnerable Library - pug-2.0.4.tgz

A clean, whitespace-sensitive template language for writing HTML

Library home page: https://registry.npmjs.org/pug/-/pug-2.0.4.tgz

Path to dependency file: /package.json

Path to vulnerable library: /node_modules/pug/package.json

Dependency Hierarchy:

• ❌ pug-2.0.4.tgz (Vulnerable Library)

Found in HEAD commit: b3a60f2fbb6a737eb638b50bba11114a200c71e8

Found in base branch: main

Reachability Analysis

The vulnerable code is unreachable

Vulnerability Details

Pug is an npm package which is a high-performance template engine. In pug before version 3.0.1, if a remote attacker was able to control the "pretty" option of the pug compiler, e.g. if you spread a user provided object such as the query parameters of a request into the pug template inputs, it was possible for them to achieve remote code execution on the node.js backend. This is fixed in version 3.0.1. This advisory applies to multiple pug packages including "pug", "pug-code-gen". pug-code-gen has a backported fix at version 2.0.3. This advisory is not exploitable if there is no way for un-trusted input to be passed to pug as the "pretty" option, e.g. if you compile templates in advance before applying user input to them, you do not need to upgrade.

Publish Date: 2021-03-03

URL: CVE-2021-21353

Threat Assessment

Exploit Maturity: Not Defined

EPSS: 1.3000001%

CVSS 3 Score Details (6.8)

Base Score Metrics:

• Exploitability Metrics:
  • Attack Vector: Network
  • Attack Complexity: High
  • Privileges Required: None
  • User Interaction: None
  • Scope: Changed
• Impact Metrics:
  • Confidentiality Impact: None
  • Integrity Impact: High
  • Availability Impact: None

For more information on CVSS3 Scores, click here.

Suggested Fix

Type: Upgrade version

Origin: GHSA-p493-635q-r6gr

Release Date: 2021-03-03

Fix Resolution: pug - 3.0.1,pug-code-gen - 3.0.2,pug-code-gen - 2.0.3

CVE-2026-4800

Vulnerable Library - lodash-4.17.23.tgz

Lodash modular utilities.

Library home page: https://registry.npmjs.org/lodash/-/lodash-4.17.23.tgz

Path to dependency file: /package.json

Path to vulnerable library: /node_modules/lodash/package.json

Dependency Hierarchy:

• pug-2.0.4.tgz (Root Library)
  • pug-code-gen-2.0.3.tgz
    • constantinople-3.1.2.tgz
      • babel-types-6.26.0.tgz
        • ❌ lodash-4.17.23.tgz (Vulnerable Library)

Found in HEAD commit: b3a60f2fbb6a737eb638b50bba11114a200c71e8

Found in base branch: main

Vulnerability Details

Impact:
The fix for CVE-2021-23337 (GHSA-35jh-r3h4-6jhm) added validation for the variable option in _.template but did not apply the same validation to options.imports key names. Both paths flow into the same Function() constructor sink.
When an application passes untrusted input as options.imports key names, an attacker can inject default-parameter expressions that execute arbitrary code at template compilation time.
Additionally, _.template uses assignInWith to merge imports, which enumerates inherited properties via for..in. If Object.prototype has been polluted by any other vector, the polluted keys are copied into the imports object and passed to Function().
Patches:
Users should upgrade to version 4.18.0.
Workarounds:
Do not pass untrusted input as key names in options.imports. Only use developer-controlled, static key names.

Publish Date: 2026-03-31

URL: CVE-2026-4800

Threat Assessment

Exploit Maturity: Not Defined

EPSS: 0.1%

CVSS 3 Score Details (8.1)

Base Score Metrics:

• Exploitability Metrics:
  • Attack Vector: Network
  • Attack Complexity: High
  • Privileges Required: None
  • User Interaction: None
  • Scope: Unchanged
• Impact Metrics:
  • Confidentiality Impact: High
  • Integrity Impact: High
  • Availability Impact: High

For more information on CVSS3 Scores, click here.

Suggested Fix

Type: Upgrade version

Origin: GHSA-r5fr-rjxr-66jc

Release Date: 2026-03-31

Fix Resolution: lodash-amd - 4.18.0,lodash - 4.18.0,lodash.template - 4.18.0,lodash-es - 4.18.0

CVE-2024-36361

Vulnerable Libraries - pug-2.0.4.tgz, pug-code-gen-2.0.3.tgz

pug-2.0.4.tgz

A clean, whitespace-sensitive template language for writing HTML

Library home page: https://registry.npmjs.org/pug/-/pug-2.0.4.tgz

Path to dependency file: /package.json

Path to vulnerable library: /node_modules/pug/package.json

Dependency Hierarchy:

• ❌ pug-2.0.4.tgz (Vulnerable Library)

pug-code-gen-2.0.3.tgz

Default code-generator for pug. It generates HTML via a JavaScript template function.

Library home page: https://registry.npmjs.org/pug-code-gen/-/pug-code-gen-2.0.3.tgz

Path to dependency file: /package.json

Path to vulnerable library: /node_modules/pug-code-gen/package.json

Dependency Hierarchy:

• pug-2.0.4.tgz (Root Library)
  • ❌ pug-code-gen-2.0.3.tgz (Vulnerable Library)

Found in HEAD commit: b3a60f2fbb6a737eb638b50bba11114a200c71e8

Found in base branch: main

Vulnerability Details

Pug through 3.0.2 allows JavaScript code execution if an application accepts untrusted input for the name option of the compileClient, compileFileClient, or compileClientWithDependenciesTracked function. NOTE: these functions are for compiling Pug templates into JavaScript, and there would typically be no reason to allow untrusted callers.

Publish Date: 2024-05-24

URL: CVE-2024-36361

Threat Assessment

Exploit Maturity: Not Defined

EPSS: 0.3%

CVSS 3 Score Details (6.8)

Base Score Metrics:

• Exploitability Metrics:
  • Attack Vector: Network
  • Attack Complexity: High
  • Privileges Required: None
  • User Interaction: Required
  • Scope: Unchanged
• Impact Metrics:
  • Confidentiality Impact: High
  • Integrity Impact: High
  • Availability Impact: None

For more information on CVSS3 Scores, click here.

CVE-2026-2950

Vulnerable Library - lodash-4.17.23.tgz

Lodash modular utilities.

Library home page: https://registry.npmjs.org/lodash/-/lodash-4.17.23.tgz

Path to dependency file: /package.json

Path to vulnerable library: /node_modules/lodash/package.json

Dependency Hierarchy:

• pug-2.0.4.tgz (Root Library)
  • pug-code-gen-2.0.3.tgz
    • constantinople-3.1.2.tgz
      • babel-types-6.26.0.tgz
        • ❌ lodash-4.17.23.tgz (Vulnerable Library)

Found in HEAD commit: b3a60f2fbb6a737eb638b50bba11114a200c71e8

Found in base branch: main

Vulnerability Details

Impact:
Lodash versions 4.17.23 and earlier are vulnerable to prototype pollution in the _.unset and _.omit functions. The fix for (CVE-2025-13465: GHSA-xxjr-mmjv-4gpg) only guards against string key members, so an attacker can bypass the check by passing array-wrapped path segments. This allows deletion of properties from built-in prototypes such as Object.prototype, Number.prototype, and String.prototype.
The issue permits deletion of prototype properties but does not allow overwriting their original behavior.
Patches:
This issue is patched in 4.18.0.
Workarounds:
None. Upgrade to the patched version.

Publish Date: 2026-03-31

URL: CVE-2026-2950

Threat Assessment

Exploit Maturity: Not Defined

EPSS: 0.0%

CVSS 3 Score Details (6.5)

Base Score Metrics:

• Exploitability Metrics:
  • Attack Vector: Network
  • Attack Complexity: Low
  • Privileges Required: None
  • User Interaction: None
  • Scope: Unchanged
• Impact Metrics:
  • Confidentiality Impact: None
  • Integrity Impact: Low
  • Availability Impact: Low

For more information on CVSS3 Scores, click here.

Suggested Fix

Type: Upgrade version

Origin: GHSA-xxjr-mmjv-4gpg

Release Date: 2026-03-31

Fix Resolution: lodash-es - 4.17.23,lodash-amd - 4.17.23,lodash - 4.17.23