What’s Vulnerable › Vulnerabilities

CVE-2020-9861

• Severity: high (CVSS 7.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.5% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2020-11-02 · updated 2026-06-17
• Weakness: CWE-674

Description

A stack overflow issue existed in Swift for Linux. The issue was addressed with improved input validation for dealing with deeply nested malicious JSON input.

Affected products

• Swift Project Swift Corelib-Foundation: through 5.1.4

References

• https://forums.swift.org/t/swift-5-1-5-for-linux-jsonserialization-limit-recursion-when-parsing/34514
• https://forums.swift.org/t/swift-5-1-5-for-linux-jsonserialization-limit-recursion-when-parsing/34514

Get alerted when CVE-2020-9861 or the next vulnerability affects your stack