CVE-2022-28229

Severity: high (CVSS 7.5 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.8% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2022-12-23 · updated 2026-06-17
Weakness: CWE-400

Description

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

Affected products

userver: before 2022-11-18 — fixed in 2022-11-18

How to fix

Upgrade to a fixed version: userver 2022-11-18. Check the vendor advisory for mitigations.

References

https://userver.tech/df/d3a/md_en_userver_security_changelog.html
https://userver.tech/df/d3a/md_en_userver_security_changelog.html

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