CVE-2023-2727 | Bypassing policies imposed by the ImagePolicyWebhook admission plugin

Users may be able to launch containers using images that are restricted by ImagePolicyWebhook when using ephemeral containers. Kubernetes clusters are only affected if the ImagePolicyWebhook admission plugin is used together with ephemeral containers.

Published: 2023-07-03 Last update: 2025-02-13 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2023-2727 is rated Low Risk (39.7/100): CVSS Medium severity, with low exploitation likelihood (EPSS 0.17%). Monitor for updates and reassess as exploit intelligence or EPSS changes.

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-2023-2727

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 2026-01-04 0.15% 0.17% +0.03%
2 2026-01-01 0.17% 0.15% -0.03%
3 2025-12-04 — 0.17% —

Full EPSS history (32 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2023-2727

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
6.5 3.1 MEDIUM
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/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:H)
They need powerful rights—admin, root, or similar—before this pays off.
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:H)
Serious risk that confidential data gets exposed in a big way.
Integrity (I:H)
They could widely tamper with or forge data—trust in the data is badly hurt.
Availability (A:N)
Service keeps running; no real outage angle.
 1.2 5.2 [email protected]
6.5 3.1 MEDIUM
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/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:H)
They need powerful rights—admin, root, or similar—before this pays off.
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:H)
Serious risk that confidential data gets exposed in a big way.
Integrity (I:H)
They could widely tamper with or forge data—trust in the data is badly hurt.
Availability (A:N)
Service keeps running; no real outage angle.
 1.2 5.2 [email protected]

Weakness enumeration for CVE-2023-2727

GitHub Security Advisory for CVE-2023-2727

GHSA-qc2g-gmh6-95p4 · Severity: medium · Ecosystem: go — kube-apiserver vulnerable to policy bypass

OS Trackers for CVE-2023-2727

vendor priority summary link
debian not yet assigned CVE-2023-2727 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-2023-2727
redhat medium — https://access.redhat.com/security/cve/CVE-2023-2727
suse medium CVE-2023-2727 severity moderate: SUSE including 63 source package names (govulncheck-vulndb-0.0.20250807T150727-1.1, govulncheck-vulndb-0.0.20250814T182633-160000.1.2, …), 178 product×package rows across 27 product lines (SUSE CaaS Platform 4.0, SUSE Enterprise Storage 7, … (27 product lines)): Fixed 162, Will Not Fix 14, Known Not Affected 2. https://www.suse.com/security/cve/CVE-2023-2727/
ubuntu medium CVE-2023-2727 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 7, not-affected 3, DNE 1, released 1. https://ubuntu.com/security/CVE-2023-2727

Affected software / configurations for CVE-2023-2727

Vendor Product Version Raw CPE
kubernetes kubernetes <= 1.24.14 cpe:2.3:a:kubernetes:kubernetes:*:*:*:*:*:*:*:*
kubernetes kubernetes >= 1.25.0, <= 1.25.10 cpe:2.3:a:kubernetes:kubernetes:*:*:*:*:*:*:*:*
kubernetes kubernetes >= 1.26.0, <= 1.26.5 cpe:2.3:a:kubernetes:kubernetes:*:*:*:*:*:*:*:*
kubernetes kubernetes >= 1.27.0, <= 1.27.2 cpe:2.3:a:kubernetes:kubernetes:*:*:*:*:*:*:*:*

References for CVE-2023-2727

cvelogic Threat Intelligence