What’s Vulnerable › Vulnerabilities

CVE-2022-29970

• Severity: high (CVSS 7.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 2.1% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2022-05-02 · updated 2026-06-17
• Weakness: CWE-22

Description

Sinatra before 2.2.0 does not validate that the expanded path matches public_dir when serving static files.

Affected products

• Debian Linux: 10.0
• sinatra: before 2.2.0 — fixed in 2.2.0

How to fix

Upgrade to a fixed version: sinatra 2.2.0. Check the vendor advisory for mitigations.

References

• https://github.com/sinatra/sinatra/pull/1683/commits/462c3ca1db53ed3cfc394cf5948e9c948ad1c10e
• https://lists.debian.org/debian-lts-announce/2022/10/msg00034.html
• https://github.com/sinatra/sinatra/pull/1683/commits/462c3ca1db53ed3cfc394cf5948e9c948ad1c10e
• https://lists.debian.org/debian-lts-announce/2022/10/msg00034.html
• https://lists.debian.org/debian-lts-announce/2024/09/msg00020.html

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