CVE-2026-27900: Terraform Provider Debug Logs Vulnerable to Sensitive Information Exposure
Vulnerability summary
CVE-2026-27900 is a high (CVSS 7.7) vulnerability in linode terraform-provider-linode. EPSS estimates a 0.52% chance of exploitation in the next 30 days, higher than 44.3% of scored vulnerabilities.
Not severe (CVSS 5, network access); no exploitation reported by the 5 checked sources
Source freshness unavailable
How is this decided?Advisory lineage
Upstream 0 · Downstream 2 · Related 2Timeline
- 26-02-2026PublishedVulnerability first disclosed.
- 26-02-2026Last modifiedVulnerability information updated.
Description
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.
CVSS metrics
3 scores · 3 sources · 1 version- CVE.orgCNA5.0MediumCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:N/A:NDiffers
- OSV · GoEcosystem advisory · calculated5.0MediumCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:N/A:NDiffers
EPSS trend
Probability
0.52%
Chance of exploitation in the next 30 days
Percentile
44%
Versus all other CVEs
30-day change
Decrease -0.06 pp
From 0.58% on 04-10-2026
Known exploited
Compare KEV catalogsNot in the CISA KEV catalog.
Not in the ENISA CNW catalog.
Not in the CIRCL catalog.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
Known conditions: network-reachable, low-privilege account, no user interaction (CVSS vector). Other conditions: not stated in public data.
Github.com/linode/terraform-provider-linode2 products
- v2≤ 2.41.2 | All versions (No fix recorded)
- v3< 3.9.0
Github.com/linode1 product
- terraform-provider-linode≤ 1.30.0 | All versions (No fix recorded)
Linode1 product
- terraform-provider-linode< 3.9.0
Terraform1 product
- linode_provider< 3.9.0
4 vendors · 5 products
References
7 links- github.com/linode/terraform-provider-linode/security/advisories/GHSA-5rc7-2jj6-mp64X Refsource CONFIRMWEBAdvisoryVendor Advisory
- github.com/linode/terraform-provider-linode/commit/43a925d826b999f0355de3dc7330c55f496824c0X Refsource MISCWEBFIXPatch