CVE-2026-55108Public exploitNetwork attack vector

Controller crash via symlinked unbounded file read

Published Aug 28, 2026 · Updated Aug 28, 2026

Denial of service in KubeVela allows remote authenticated users to crash the vela-core controller through a crafted ComponentDefinition. GetTerraformConfigurationFromRemote follows repository-controlled variables.tf or main.tf symlinks and passes the target to os.ReadFile without verifying a regular in-cache file or bounding its size. Create or update access to ComponentDefinition objects is required; a link to /dev/zero exhausts memory, OOM-kills the controller, and can repeatedly restart its Pod.

CVSS severity8.5
High
EPSS probability0.57%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Denial of service in KubeVela allows remote authenticated users to crash the vela-core controller through a crafted ComponentDefinition. GetTerraformConfigurationFromRemote follows repository-controlled variables.tf or main.tf symlinks and passes the target to os.ReadFile without verifying a regular in-cache file or bounding its size. Create or update access to ComponentDefinition objects is required; a link to /dev/zero exhausts memory, OOM-kills the controller, and can repeatedly restart its Pod.

The record

CVE
CVE-2026-55108
Published
Aug 28, 2026
Updated
Aug 28, 2026
Vendor
KubeVela
Product
KubeVela
Classifications
CWE-59, CWE-400, T1499.004
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Aug 28, 2026CVE publishedPublication date reported by the CVE source.
  2. Aug 28, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

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

  1. Affected versionversion=>= 1.10.0-alpha.1, < 1.10.9
  2. Affected versionversion=>= 1.11.0-alpha.1, < 1.11.0-alpha.4
  3. Affected versionversion=< 1.9.14

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

KubeVela · KubeVelaversion=>= 1.10.0-alpha.1, < 1.10.9; version=>= 1.11.0-alpha.1, < 1.11.0-alpha.4; version=< 1.9.14

Published CVSS scores

8.5GitHubCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/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)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-59Improper Link Resolution Before File Access ('Link Following')
CWE-400Uncontrolled Resource Consumption
T1499.004Application or System Exploitation

Public exploit references

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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