What is CVE-2022-29970?

CVE-2022-29970 is a high-severity vulnerability in Sinatrarb Sinatra, classified under Path Traversal. CVSS score: 7.5/10. Published 2022-05-02.

How severe is CVE-2022-29970?

High severity. CVSS v3 base score is 7.5 out of 10.

Path Traversal in Sinatrarb Sinatra

CVE-2022-29970

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

Vulnerability class: Path Traversal (Directory Traversal)

Published 2022-05-02 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N.

EPSS exploit prediction

EPSS: 0.021 (81.3th percentile), scored 2026-10-02.

Low probability of exploitation in the next 30 days, but still tracked. 81st percentile — 81.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.022 · newest: 0.021 · change: -0.000

Affected products

Sinatrarb Sinatra
Debian Linux — versions 10.0

Weakness classification (CWE)

CWE-22 — Path Traversal

References

github.com/sinatra/sinatra/pull/1683/commits/462c3ca1db53ed3cfc394cf5948e9c948a… (Patch, Third Party Advisory)
lists.debian.org/debian-lts-announce/2022/10/msg00034.html (mailing-list, Mailing List, Third Party Advisory)
af854a3a-2127-422b-91ae-364da2661108

Frequently asked questions

What is CVE-2022-29970?: CVE-2022-29970 is a high-severity vulnerability in Sinatrarb Sinatra, classified under Path Traversal. CVSS score: 7.5/10. Published 2022-05-02.
How severe is CVE-2022-29970?: High severity. CVSS v3 base score is 7.5 out of 10.