How severe is CVE-2022-29970?

CVE-2022-29970 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.

Is CVE-2022-29970 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (79th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2022-29970?

CVE-2022-29970 primarily affects Sinatrarb Sinatra. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2022-29970?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2022-29970 published?

CVE-2022-29970 was published on 2022-05-02 and last updated on 2026-06-17.

CVE-2022-29970

CVE-2022-29970 is a high-severity vulnerability in Sinatrarb Sinatra with a CVSS 3.x base score of 7.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-22.

Key facts

Severity: High (CVSS 3.x base score 7.5)
CVSS v2: 5.0
EPSS exploit prediction: 2% (79th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-22
Affected product: Sinatrarb Sinatra
Published: 2022-05-02
Last modified: 2026-06-17

Description

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

Frequently asked questions

What is CVE-2022-29970?: Sinatra before 2.2.0 does not validate that the expanded path matches public_dir when serving static files.
How severe is CVE-2022-29970?: CVE-2022-29970 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.
Is CVE-2022-29970 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (79th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2022-29970?: CVE-2022-29970 primarily affects Sinatrarb Sinatra. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2022-29970?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2022-29970 published?: CVE-2022-29970 was published on 2022-05-02 and last updated on 2026-06-17.

References

Affected products (2)

cpe:2.3:a:sinatrarb:sinatra:*:*:*:*:*:*:*:*
cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*

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