CVE-2022-3172 | Kubernetes - API server - Aggregated API server can cause clients to be redirected (SSRF)

A security issue was discovered in kube-apiserver that allows an aggregated API server to redirect client traffic to any URL. This could lead to the client performing unexpected actions as well as forwarding the client's API server credentials to third parties.

Published: 2023-11-03 Last update: 2026-06-17 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2022-3172 is rated Moderate Risk (48.8/100): CVSS Medium severity, with medium exploitation likelihood (EPSS 2.46%). 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-2022-3172

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 2.83% 2.46% -0.36%
2 2026-06-14 3.41% 2.83% -0.59%
3 2026-05-27 — 3.41% —

Full EPSS history (41 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2022-3172

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
5.1 3.1 MEDIUM
CVSS:3.1/AV:N/AC:H/PR:H/UI:R/S:C/C:L/I:L/A:L 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:H)
Even with access, the exploit needs extra luck, timing, or a fussy environment to actually work.
Privileges required (PR:H)
They need powerful rights—admin, root, or similar—before this pays off.
User interaction (UI:R)
A real person has to do something—click, install, enable—otherwise it doesn’t land.
Scope (S:C)
Breaking this can reach past the original component and bite other resources—bigger blast radius.
Confidentiality (C:L)
Some sensitive info could get out, but not a total data dump.
Integrity (I:L)
Attackers could change some data, but it’s limited—not everything goes.
Availability (A:L)
Might cause slowdowns, glitches, or partial disruption—not a full brick.
 1.0 3.7 [email protected]
8.2 3.1 HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:L/A:N 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:R)
A real person has to do something—click, install, enable—otherwise it doesn’t land.
Scope (S:C)
Breaking this can reach past the original component and bite other resources—bigger blast radius.
Confidentiality (C:H)
Serious risk that confidential data gets exposed in a big way.
Integrity (I:L)
Attackers could change some data, but it’s limited—not everything goes.
Availability (A:N)
Service keeps running; no real outage angle.
 2.8 4.7 [email protected]

Weakness enumeration for CVE-2022-3172

OS Trackers for CVE-2022-3172

vendor priority summary link
debian not yet assigned CVE-2022-3172 not yet assigned priority: Debian including 1 source packages (kubernetes), 5 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 5. https://security-tracker.debian.org/tracker/CVE-2022-3172
redhat medium — https://access.redhat.com/security/cve/CVE-2022-3172
suse medium CVE-2022-3172 severity moderate: SUSE including 71 source package names (kubernetes, kubernetes-client, …), 274 product×package rows across 23 product lines (SUSE CaaS Platform 4.0, SUSE Enterprise Storage 6, … (23 product lines)): Known Not Affected 274. https://www.suse.com/security/cve/CVE-2022-3172/
ubuntu medium CVE-2022-3172 medium priority: Ubuntu including 1 source packages (kubernetes), 12 status rows across 12 suites (bionic, focal, jammy, kinetic, lunar, mantic, noble, oracular, plucky, trusty, upstream, xenial): ignored 6, not-affected 3, DNE 2, needs-triage 1. https://ubuntu.com/security/CVE-2022-3172

Affected software / configurations for CVE-2022-3172

Vendor Product Version Raw CPE
kubernetes apiserver <= 1.21.14 cpe:2.3:a:kubernetes:apiserver:*:*:*:*:*:*:*:*
kubernetes apiserver >= 1.22.0, < 1.22.14 cpe:2.3:a:kubernetes:apiserver:*:*:*:*:*:*:*:*
kubernetes apiserver >= 1.23.0, < 1.23.11 cpe:2.3:a:kubernetes:apiserver:*:*:*:*:*:*:*:*
kubernetes apiserver >= 1.24.0, < 1.24.5 cpe:2.3:a:kubernetes:apiserver:*:*:*:*:*:*:*:*
kubernetes apiserver 1.25.0 cpe:2.3:a:kubernetes:apiserver:1.25.0:*:*:*:*:*:*:*

References for CVE-2022-3172

cvelogic Threat Intelligence