What’s Vulnerable › Vulnerabilities

CVE-2023-26113

• Severity: high (CVSS 7.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.2% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2023-03-18 · updated 2026-06-17
• Weakness: CWE-1321

Description

Versions of the package collection.js before 6.8.1 are vulnerable to Prototype Pollution via the extend function in Collection.js/dist/node/iterators/extend.js.

Affected products

• collection.js: before 6.8.1 — fixed in 6.8.1

How to fix

Upgrade to a fixed version: collection.js 6.8.1. Check the vendor advisory for mitigations.

References

• https://github.com/kobezzza/Collection/blob/be32c48e68f49d3be48a58e929d1ab8ff1d2d19c/dist/node/iterators/extend.js%23L324
• https://github.com/kobezzza/Collection/commit/d3d937645f62f37d3115d6aa90bb510fd856e6a2
• https://github.com/kobezzza/Collection/issues/27
• https://github.com/kobezzza/Collection/releases/tag/v6.8.1
• https://security.snyk.io/vuln/SNYK-JS-COLLECTIONJS-3185148
• https://github.com/kobezzza/Collection/blob/be32c48e68f49d3be48a58e929d1ab8ff1d2d19c/dist/node/iterators/extend.js%23L324
• https://github.com/kobezzza/Collection/commit/d3d937645f62f37d3115d6aa90bb510fd856e6a2
• https://github.com/kobezzza/Collection/issues/27
• https://github.com/kobezzza/Collection/releases/tag/v6.8.1
• https://security.snyk.io/vuln/SNYK-JS-COLLECTIONJS-3185148

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