CVE-2022-28229

Name: CVE-2022-28229
Creator: NVD / NIST
Published: 2022-12-23T22:15:08.71+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.5/10EPSS 0.74%

Last modified Jun 17, 2026

CVE-2022-28229 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. The hash functionality in userver before 42059b6319661583b3080cab9b595d4f8ac48128 allows attackers to cause a denial of service via crafted HTTP request, involving collisions.. EPSS estimates a 0.74% chance of exploitation in the next 30 days.

Description

The hash functionality in userver before 42059b6319661583b3080cab9b595d4f8ac48128 allows attackers to cause a denial of service via crafted HTTP request, involving collisions.

Metrics

CVSS 3.1

7.5/10

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

EPSS Probability

0.74%

49.9th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-400

Affected Software

Vendor	Product	Versions
Userver	Userver	< 2022-11-18

References

https://userver.tech/df/d3a/md_en_userver_security_changelog.htmlVendor Advisory
https://userver.tech/df/d3a/md_en_userver_security_changelog.htmlVendor Advisory

Timeline

Published: Dec 23, 2022
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2022-28229?

The hash functionality in userver before 42059b6319661583b3080cab9b595d4f8ac48128 allows attackers to cause a denial of service via crafted HTTP request, involving collisions.

How severe is CVE-2022-28229?

CVE-2022-28229 has a CVSS score of 7.5/10 (HIGH severity). The EPSS model estimates a 0.74% probability of exploitation in the next 30 days.

How do I fix CVE-2022-28229?

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-2022-28229?

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

Scan your code now

Source: NVD / NIST