What’s Vulnerable › Vulnerabilities

CVE-2020-9840

• Severity: high (CVSS 7.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.0% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2020-05-11 · updated 2026-06-17

Description

In SwiftNIO Extras before 1.4.1, a logic issue was addressed with improved restrictions.

Affected products

• SwiftNIO Extras: before 1.4.1 — fixed in 1.4.1

How to fix

Upgrade to a fixed version: SwiftNIO Extras 1.4.1. Check the vendor advisory for mitigations.

References

• https://github.com/apple/swift-nio-extras/security/advisories/GHSA-xhhr-p2r9-jmm7
• https://github.com/apple/swift-nio-extras/security/advisories/GHSA-xhhr-p2r9-jmm7

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