CVE-2026-27900Network attack vector

Sensitive-data disclosure via unredacted option logging

Published Feb 26, 2026 · Updated Feb 26, 2026

Sensitive-data exposure in the Terraform Provider for Linode before 3.9.0 allows remote authenticated users to read secrets from debug logs. Instance, disk, StackScript, image-share, object-storage, and NodeBalancer paths passed entire option structures containing passwords, scripts, tokens, object data, or TLS keys to Terraform's logger without field filtering. The issue is reachable only when provider debug logging is explicitly enabled and the user can access local, CI/CD, or centralized provider logs; confidentiality is the bounded consequence.

CVSS severity5.0
Medium
EPSS probability0.47%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Sensitive-data exposure in the Terraform Provider for Linode before 3.9.0 allows remote authenticated users to read secrets from debug logs. Instance, disk, StackScript, image-share, object-storage, and NodeBalancer paths passed entire option structures containing passwords, scripts, tokens, object data, or TLS keys to Terraform's logger without field filtering. The issue is reachable only when provider debug logging is explicitly enabled and the user can access local, CI/CD, or centralized provider logs; confidentiality is the bounded consequence.

The record

CVE
CVE-2026-27900
Published
Feb 26, 2026
Updated
Feb 26, 2026
Vendor
Linode
Product
Terraform Provider for Linode
Classifications
CWE-532, T1552.001
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Feb 26, 2026CVE publishedPublication date reported by the CVE source.
  2. Feb 26, 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=< 3.9.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Linode · Terraform Provider for Linodeversion=< 3.9.0

Published CVSS scores

5.0GitHub, Inc.CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:N/A:N
7.7NIST NVDCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N

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 exploitUnconfirmed

Weakness, pattern, technique

CWE-532Insertion of Sensitive Information into Log File
T1552.001Credentials In Files

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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