CVE-2022-45442

Name: CVE-2022-45442
Creator: NVD / NIST
Published: 2022-11-28T21:15:10.67+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 8.8/10EPSS 0.64%

Last modified Jun 17, 2026

CVE-2022-45442 is a high-severity vulnerability rated 8.8/10 on the CVSS scale. Sinatra is a domain-specific language for creating web applications in Ruby. An issue was discovered in Sinatra 2.0 before 2.2.3 and 3.0 before 3.0.4. EPSS estimates a 0.64% chance of exploitation in the next 30 days.

Description

Sinatra is a domain-specific language for creating web applications in Ruby. An issue was discovered in Sinatra 2.0 before 2.2.3 and 3.0 before 3.0.4. An application is vulnerable to a reflected file download (RFD) attack that sets the Content-Disposition header of a response when the filename is derived from user-supplied input. Version 2.2.3 and 3.0.4 contain patches for this issue.

Metrics

CVSS 3.1

8.8/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

EPSS Probability

0.64%

46.1th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-494

Affected Software

Vendor	Product	Versions
Sinatrarb	Sinatra	>= 2.0.0, < 2.2.3
Sinatrarb	Sinatra	>= 3.0.0, < 3.0.4
Debian	Debian Linux	10.0

References

https://github.com/advisories/GHSA-8x94-hmjh-97hqNot Applicable
https://github.com/sinatra/sinatra/commit/ea8fc9495a350f7551b39e3025bfcd06f49f363bPatch, Third Party Advisory
https://github.com/sinatra/sinatra/security/advisories/GHSA-2x8x-jmrp-phxwThird Party Advisory
https://lists.debian.org/debian-lts-announce/2023/01/msg00005.htmlMailing List, Third Party Advisory
https://www.blackhat.com/docs/eu-14/materials/eu-14-Hafif-Reflected-File-Download-A-New-Web-Attack-Vector.pdfExploit, Third Party Advisory
https://github.com/advisories/GHSA-8x94-hmjh-97hqNot Applicable
https://github.com/sinatra/sinatra/commit/ea8fc9495a350f7551b39e3025bfcd06f49f363bPatch, Third Party Advisory
https://github.com/sinatra/sinatra/security/advisories/GHSA-2x8x-jmrp-phxwThird Party Advisory
https://lists.debian.org/debian-lts-announce/2023/01/msg00005.htmlMailing List, Third Party Advisory
https://lists.debian.org/debian-lts-announce/2024/09/msg00020.html
https://www.blackhat.com/docs/eu-14/materials/eu-14-Hafif-Reflected-File-Download-A-New-Web-Attack-Vector.pdfExploit, Third Party Advisory

Timeline

Published: Nov 28, 2022
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2022-45442?

How severe is CVE-2022-45442?

CVE-2022-45442 has a CVSS score of 8.8/10 (HIGH severity). The EPSS model estimates a 0.64% probability of exploitation in the next 30 days.

How do I fix CVE-2022-45442?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2022-45442?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST