CVE-2026-27900

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{"affected": [{"affectedData": [{"product": "terraform-provider-linode", "vendor": "linode", "versions": [{"status": "affected", "version": "< 3.9.0"}]}], "source": "security-advisories@github.com"}], "configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:terraform:linode_provider:*:*:*:*:*:*:*:*", "matchCriteriaId": "F84899D2-CBC5-46AA-9147-C6262BA3C0A7", "versionEndExcluding": "3.9.0", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "The Terraform Provider for Linode versions prior to v3.9.0 logged sensitive information including some passwords, StackScript content, and object storage data in debug logs without redaction. Provider debug logging is not enabled by default. This issue is exposed when debug/provider logs are explicitly enabled (for example in local troubleshooting, CI/CD jobs, or centralized log collection). If enabled, sensitive values may be written to logs and then retained, shared, or exported beyond the original execution environment. An authenticated user with access to provider debug logs (through log aggregation systems, CI/CD pipelines, or debug output) would thus be able to extract these sensitive credentials. Versions 3.9.0 and later sanitize debug logs by logging only non-sensitive metadata such as labels, regions, and resource IDs while redacting credentials, tokens, keys, scripts, and other sensitive content. Some other mitigations and workarounds are available. Disable Terraform/provider debug logging or set it to `WARN` level or above, restrict access to existing and historical logs, purge/retention-trim logs that may contain sensitive values, and/or rotate potentially exposed secrets/credentials."}, {"lang": "es", "value": "El proveedor de Terraform para Linode versiones anteriores a la v3.9.0 registr\u00f3 informaci\u00f3n sensible, incluyendo algunas contrase\u00f1as, contenido de StackScript y datos de almacenamiento de objetos, en los registros de depuraci\u00f3n sin redacci\u00f3n. El registro de depuraci\u00f3n del proveedor no est\u00e1 habilitado por defecto. Este problema se expone cuando los registros de depuraci\u00f3n/proveedor se habilitan expl\u00edcitamente (por ejemplo, en la resoluci\u00f3n de problemas local, trabajos de CI/CD o recolecci\u00f3n centralizada de registros). Si est\u00e1 habilitado, los valores sensibles pueden escribirse en los registros y luego retenerse, compartirse o exportarse m\u00e1s all\u00e1 del entorno de ejecuci\u00f3n original. Un usuario autenticado con acceso a los registros de depuraci\u00f3n del proveedor (a trav\u00e9s de sistemas de agregaci\u00f3n de registros, pipelines de CI/CD o salida de depuraci\u00f3n) podr\u00eda as\u00ed extraer estas credenciales sensibles. Las versiones 3.9.0 y posteriores sanean los registros de depuraci\u00f3n registrando solo metadatos no sensibles como etiquetas, regiones e IDs de recursos, mientras redactan credenciales, tokens, claves, scripts y otro contenido sensible. Algunas otras mitigaciones y soluciones alternativas est\u00e1n disponibles. Deshabilite el registro de depuraci\u00f3n de Terraform/proveedor o config\u00farelo al nivel WARN o superior, restrinja el acceso a los registros existentes e hist\u00f3ricos, purgue/recorte por retenci\u00f3n los registros que puedan contener valores sensibles, y/o rote los secretos/credenciales potencialmente expuestos."}], "id": "CVE-2026-27900", "lastModified": "2026-06-17T10:27:50.833", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 5.0, "baseSeverity": "MEDIUM", "confidentialityImpact": "LOW", "integrityImpact": "NONE", "privilegesRequired": "LOW", "scope": "CHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:N/A:N", "version": "3.1"}, "exploitabilityScore": 3.1, "impactScore": 1.4, "source": "security-advisories@github.com", "type": "Secondary"}, {"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 7.7, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "NONE", "privilegesRequired": "LOW", "scope": "CHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N", "version": "3.1"}, "exploitabilityScore": 3.1, "impactScore": 4.0, "source": "nvd@nist.gov", "type": "Primary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-27900", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2026-02-26T14:35:17.379849Z", "version": "2.0.3"}}]}, "published": "2026-02-26T02:16:20.770", "references": [{"source": "security-advisories@github.com", "tags": ["Patch"], "url": "https://github.com/linode/terraform-provider-linode/commit/43a925d826b999f0355de3dc7330c55f496824c0"}, {"source": "security-advisories@github.com", "tags": ["Issue Tracking", "Patch"], "url": "https://github.com/linode/terraform-provider-linode/pull/2269"}, {"source": "security-advisories@github.com", "tags": ["Release Notes"], "url": "https://github.com/linode/terraform-provider-linode/releases/tag/v3.9.0"}, {"source": "security-advisories@github.com", "tags": ["Vendor Advisory"], "url": "https://github.com/linode/terraform-provider-linode/security/advisories/GHSA-5rc7-2jj6-mp64"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Third Party Advisory"], "url": "http://www.openwall.com/lists/oss-security/2026/02/26/2"}], "sourceIdentifier": "security-advisories@github.com", "vulnStatus": "Analyzed", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-532"}], "source": "security-advisories@github.com", "type": "Secondary"}]}

{}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[0,3.9.0)"}}], "enrichment": {"confidence": 100.0, "confidence_source": "cna", "scores": [{"score": 100.0, "source": "cna"}]}, "original": {"product": "terraform-provider-linode", "source": "cna", "vendor": "linode"}, "product": "terraform-provider-linode", "vendor": "linode"}], "analysis": {"en": {"generated_at": "2026-04-17T14:34:58.296445+00:00", "value": {"mitigation_remediation": ["Apply the vendor patch to upgrade to version 3.9.0 or later, which sanitizes debug logs.", "Disable provider debug logging or set the level to WARN or higher to prevent sensitive data from being logged.", "Limit access to existing debug logs by restricting permissions on log aggregation platforms and enforcing least\u2011privilege access.", "Purge or trim historical logs that may contain sensitive values and rotate any credentials that could have been exposed."], "summary": {"action": "Patch", "impact": "Sensitive Information Exposure"}, "threat_synthesis": {"affected_systems": "Linode Terraform provider for versions before 3.9.0. The affected product includes all releases of the Linode provider distributed through Terraform, prior to the 3.9.0 release that introduced log sanitization. The vulnerability applies to all operating environments where provider debug logging might be enabled.", "description_and_impact": "The Terraform Provider for Linode writes authentication keys, passwords, and other sensitive data to debug logs when the provider is compiled with debug logging enabled, without redacting these values. A privileged user who can view the logs\u2014such as a developer, CI/CD runner, or system administrator with access to aggregated log stores\u2014can read credentials, manage tokens, and retrieve StackScript contents stored in the logs. The vulnerability is a classic instance of CWE\u2011532, where sensitive information is recorded in application logs.\nThe likely attack vector is enabling the provider\u2019s debug mode, which is normally off by default but may be turned on for troubleshooting or when running build pipelines. The disclosure potential arises not from an external network exploit but from internal access to the logs, so the vulnerability\u2019s threat surface depends on the security of the logging infrastructure.\nThough the CVSS score is 5, indicating moderate severity, the EPSS score is less than 1\u202f% and the issue is not listed as Known Exploited, its exposure of credentials can be fatal if privileged individuals or compromised CI systems gain access to the logs. The consequence is loss of confidentiality and potential compromise of authenticated resources on Linode.", "risk_and_exploitability": "The risk is moderate, as indicated by CVSS 5, but the exploitation hinges on an internal actor\u2019s ability to read provider debug logs. Because debug logging is disabled by default and the EPSS score is very low, the likelihood of accidental exploitation is small. However, when debug logging is actively enabled\u2014for instance during local debugging, CI/CD runs, or centralized log collection\u2014the attacker could read or export logs and obtain credentials or scripts, especially if those logs are retained and shared.\nThe status in CISA\u2019s KEV catalog is not listed, meaning there is no known mass exploitation yet. The broader CISA KEV listing suggests that securing log access and disabling debug output are effective mitigations."}}}}, "created": "2026-02-26T13:10:13.373353+00:00", "updated": "2026-04-17T14:45:21.025646+00:00", "vendors": ["linode", "linode$PRODUCT$terraform-provider-linode"]}