CVE-2019-11255 | Kubernetes CSI volume snapshot, cloning and resizing features can result in unauthorized volume data access or mutation

Improper input validation in Kubernetes CSI sidecar containers for external-provisioner (<v0.4.3, <v1.0.2, v1.1, <v1.2.2, <v1.3.1), external-snapshotter (<v0.4.2, <v1.0.2, v1.1, <1.2.2), and external-resizer (v0.1, v0.2) could result in unauthorized PersistentVolume data access or volume mutation during snapshot, restore from snapshot, cloning and resizing operations.

Published: 2019-12-05 Last update: 2024-11-21 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2019-11255 is rated Moderate Risk (45.2/100): CVSS Medium severity, with medium exploitation likelihood (EPSS 0.82%). 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-2019-11255

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 2026-05-22 0.90% 0.82% -0.08%
2 2026-02-26 0.70% 0.90% +0.19%
3 2025-11-21 — 0.70% —

Full EPSS history (16 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2019-11255

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
4.8 3.1 MEDIUM
CVSS:3.1/AV:N/AC:H/PR:H/UI:R/S:U/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: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: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:L)
Attackers could change some data, but it’s limited—not everything goes.
Availability (A:N)
Service keeps running; no real outage angle.
 0.5 4.2 [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]
5.5 2.0 MEDIUM
AV:N/AC:L/Au:S/C:P/I:P/A:N Click to expand
Access vector (AV:N)
Can be exploited remotely over network reachability.
Access complexity (AC:L)
Exploitation conditions are straightforward and predictable.
Authentication (AU:S)
A single authentication is required.
Confidentiality impact (C:P)
Partial confidentiality impact.
Integrity impact (I:P)
Partial integrity impact.
Availability impact (A:N)
No availability impact.
 8.0 4.9 [email protected]

Weakness enumeration for CVE-2019-11255

GitHub Security Advisory for CVE-2019-11255

GHSA-f4w6-3rh6-6q4q · Severity: medium · Ecosystem: go — Kubernetes CSI Sidecar Containers Can Allow Unauthorized Data Access

OS Trackers for CVE-2019-11255

vendor priority summary link
redhat medium — https://access.redhat.com/security/cve/CVE-2019-11255

Affected software / configurations for CVE-2019-11255

Vendor Product Version Raw CPE
kubernetes external-provisioner >= 0.4.1, <= 0.4.2 cpe:2.3:a:kubernetes:external-provisioner:*:*:*:*:*:*:*:*
kubernetes external-provisioner >= 1.0.0, <= 1.0.1 cpe:2.3:a:kubernetes:external-provisioner:*:*:*:*:*:*:*:*
kubernetes external-provisioner >= 1.1.0, <= 1.2.1 cpe:2.3:a:kubernetes:external-provisioner:*:*:*:*:*:*:*:*
kubernetes external-provisioner 1.3.0 cpe:2.3:a:kubernetes:external-provisioner:1.3.0:*:*:*:*:*:*:*
kubernetes external-resizer >= 0.1.0, <= 0.2.0 cpe:2.3:a:kubernetes:external-resizer:*:*:*:*:*:*:*:*
kubernetes external-snapshotter >= 0.4.0, <= 0.4.1 cpe:2.3:a:kubernetes:external-snapshotter:*:*:*:*:*:*:*:*
kubernetes external-snapshotter >= 1.0.0, <= 1.0.1 cpe:2.3:a:kubernetes:external-snapshotter:*:*:*:*:*:*:*:*
kubernetes external-snapshotter >= 1.1.0, <= 1.2.1 cpe:2.3:a:kubernetes:external-snapshotter:*:*:*:*:*:*:*:*
redhat openshift_container_platform 3.11 cpe:2.3:a:redhat:openshift_container_platform:3.11:*:*:*:*:*:*:*
redhat openshift_container_platform 4.1 cpe:2.3:a:redhat:openshift_container_platform:4.1:*:*:*:*:*:*:*
redhat openshift_container_platform 4.2 cpe:2.3:a:redhat:openshift_container_platform:4.2:*:*:*:*:*:*:*

References for CVE-2019-11255

cvelogic Threat Intelligence