CVE-2026-44247

Webhook service interruption via unbounded request bodies

Published May 27, 2026 · Updated May 27, 2026

Resource exhaustion in Volcano before 1.12.4, 1.13.0 through 1.13.2, and 1.14.0-alpha.0 through 1.14.1 allows attackers to crash its webhook. The webhook server reads HTTP request bodies without imposing a size limit, so attacker-controlled data can exhaust its memory and trigger OOM termination. Exploitation requires an in-cluster pod that can reach the webhook endpoint and interrupts admission service availability without reported data access or modification.

CVSS severity6.8
Medium
EPSS probability0.17%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Resource exhaustion in Volcano before 1.12.4, 1.13.0 through 1.13.2, and 1.14.0-alpha.0 through 1.14.1 allows attackers to crash its webhook. The webhook server reads HTTP request bodies without imposing a size limit, so attacker-controlled data can exhaust its memory and trigger OOM termination. Exploitation requires an in-cluster pod that can reach the webhook endpoint and interrupts admission service availability without reported data access or modification.

The record

CVE
CVE-2026-44247
Published
May 27, 2026
Updated
May 27, 2026
Vendor
Volcano
Product
Volcano
Classifications
CWE-770, CWE-400, T1499
Attack vector
adjacent
Privileges
authenticated

Timeline

How it unfolded

  1. May 27, 2026CVE publishedPublication date reported by the CVE source.
  2. May 27, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=< 1.12.4
  2. Affected versionversion=>= 1.13.0, < 1.13.3
  3. Affected versionversion=>= 1.14.0-alpha.0, < 1.14.2

What conditions does exploitation require?

Attack vectoradjacent
Required privilegesauthenticated

What is affected?

Volcano · Volcanoversion=< 1.12.4; version=>= 1.13.0, < 1.13.3; version=>= 1.14.0-alpha.0, < 1.14.2

Published CVSS scores

6.8GitHubCVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H
7.4NIST NVDCVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectoradjacent
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-770Allocation of Resources Without Limits or Throttling
CWE-400Uncontrolled Resource Consumption
T1499Endpoint Denial of Service

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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