CVE-2022-30122

A possible denial of service vulnerability exists in Rack <2.0.9.1, <2.1.4.1 and <2.2.3.1 in the multipart parsing component of Rack.

Published: 2022-12-05 Last update: 2024-11-21 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2022-30122 is rated Moderate Risk (58.6/100): CVSS High severity, with medium exploitation likelihood (EPSS 2.06%). EPSS rose +1.07% over the last day, indicating growing attacker interest. Review affected assets and schedule remediation.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2022-30122

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-06-15 0.99% 2.06% +1.07%
2 2026-05-27 1.40% 0.99% -0.41%
3 2026-04-20 — 1.40% —

Full EPSS history (51 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2022-30122

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
7.5 3.1 HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:N)
No account or special rights needed—anonymous or random user is enough.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:N)
Doesn’t really leak secrets in a meaningful way.
Integrity (I:N)
Data isn’t meaningfully altered or forged.
Availability (A:H)
Could take the service down hard or make it unusable for people who depend on it.
 3.9 3.6 [email protected]

Weakness enumeration for CVE-2022-30122

GitHub Security Advisory for CVE-2022-30122

GHSA-hxqx-xwvh-44m2 · Severity: high · Ecosystem: rubygems — Denial of Service Vulnerability in Rack Multipart Parsing

OS Trackers for CVE-2022-30122

vendor priority summary link
debian not yet assigned CVE-2022-30122 not yet assigned priority: Debian including 1 source packages (ruby-rack), 5 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 5. https://security-tracker.debian.org/tracker/CVE-2022-30122
gentoo high CVE-2022-30122: 1 GLSA(s) (202310-18), 1 atom(s) (dev-ruby/rack); latest impact high. https://bugs.gentoo.org/buglist.cgi?quicksearch=CVE-2022-30122
redhat medium — https://access.redhat.com/security/cve/CVE-2022-30122
suse medium — https://www.suse.com/security/cve/CVE-2022-30122/
ubuntu medium CVE-2022-30122 medium priority: Ubuntu including 1 source packages (ruby-rack), 13 status rows across 13 suites (bionic, focal, impish, jammy, kinetic, lunar, mantic, noble, oracular, plucky, trusty, upstream, xenial): not-affected 6, released 6, ignored 1. https://ubuntu.com/security/CVE-2022-30122

Affected software / configurations for CVE-2022-30122

Vendor Product Version Raw CPE
rack_project rack >= 1.2, < 2.0.9.1 cpe:2.3:a:rack_project:rack:*:*:*:*:*:*:*:*
rack_project rack >= 2.1.0, < 2.1.4.1 cpe:2.3:a:rack_project:rack:*:*:*:*:*:*:*:*
rack_project rack >= 2.2.0, < 2.2.3.1 cpe:2.3:a:rack_project:rack:*:*:*:*:*:*:*:*
debian debian_linux 11.0 cpe:2.3:o:debian:debian_linux:11.0:*:*:*:*:*:*:*

References for CVE-2022-30122

cvelogic Threat Intelligence