What’s Vulnerable › Vulnerabilities

CVE-2021-25948

• Severity: critical (CVSS 9.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 3.3% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2021-06-10 · updated 2026-06-17
• Weakness: CWE-1321

Description

Prototype pollution vulnerability in 'expand-hash' versions 0.1.0 through 1.0.1 allows an attacker to cause a denial of service and may lead to remote code execution.

Affected products

• expand-hash: from 0.1.0 through 1.0.1

References

• https://github.com/doowb/expand-hash/blob/556913f6c2f05848110b5b8261cfc78e5ce3dc77/index.js#L19
• https://www.whitesourcesoftware.com/vulnerability-database/CVE-2021-25948
• https://github.com/doowb/expand-hash/blob/556913f6c2f05848110b5b8261cfc78e5ce3dc77/index.js#L19
• https://www.whitesourcesoftware.com/vulnerability-database/CVE-2021-25948

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