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CVE-2024-45813: ReDoS vulnerability in multiparametric routes in find-my-way

• Severity: medium (CVSS 5.3 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.7% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2024-09-18 · updated 2026-06-17
• Weakness: CWE-1333

Description

find-my-way is a fast, open source HTTP router, internally using a Radix Tree (aka compact Prefix Tree), supports route params, wildcards, and it's framework independent. A bad regular expression is generated any time one has two parameters within a single segment, when adding a `-` at the end, like `/:a-:b-`. This may cause a denial of service in some instances. Users are advised to update to find-my-way v8.2.2 or v9.0.1. or subsequent versions. There are no known workarounds for this issue.

Affected products

• delvedor find-my-way: before 8.2.2; = 9.0.0

References

• https://blakeembrey.com/posts/2024-09-web-redos
• https://github.com/delvedor/find-my-way/commit/5e9e0eb5d8d438e06a185d5e536a896572dd0440
• https://github.com/delvedor/find-my-way/security/advisories/GHSA-rrr8-f88r-h8q6

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