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CVE-2023-48713

Knative Serving vulnerable to attacker-controlled pod causing denial of service of autoscaler

MEDIUM
5.3
CVSS Score
Published: November 28, 2023 at 03:44 AM UTC
Updated: June 17, 2026 at 06:34 AM UTC
1 product affected across 1 vendorServing

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Severity
MEDIUM5.3
Exploit prediction
EPSS 0.9%
SSVC
No known exploit

Description

Knative Serving builds on Kubernetes to support deploying and serving of applications and functions as serverless containers. An attacker who controls a pod to a degree where they can control the responses from the /metrics endpoint can cause Denial-of-Service of the autoscaler from an unbound memory allocation bug. This is a DoS vulnerability, where a non-privileged Knative user can cause a DoS for the cluster. This issue has been patched in version 0.39.0.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Serving· Knative
95%
v < 0.39.0v < 1.10.51.11.0 ≤ v < 1.11.3
Affected range stops below 0.39.0, so it looks safe — our inference, not a vendor statement
Affected range stops below 1.10.5, so it looks safe — our inference, not a vendor statement
Affected range stops below 1.11.3, so it looks safe — our inference, not a vendor statement

References (4)

x_refsource_MISCPatch
Source: [email protected]
https://github.com/knative/serving/commit/012ee2509231b80b7842139bfabc30516d3026ca
x_refsource_MISCPatch
Source: [email protected]
https://github.com/knative/serving/commit/101f814112b9ca0767f457e7e616b46205551cf1
x_refsource_MISCPatch
Source: [email protected]
https://github.com/knative/serving/commit/fff40ef7bac9be8380ec3d1c70fc15b57093382a
x_refsource_CONFIRMThird Party Advisory
Source: [email protected]
https://github.com/knative/serving/security/advisories/GHSA-qmvj-4qr9-v547

SSVC — Action Prioritization

SSVCNo known exploitNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

5.3MEDIUM[email protected]
Attack Vector
NETWORK
Complexity
HIGH
Privileges
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
NONE
Availability
HIGH
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-400NVD-CWE-noinfo

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