How severe is CVE-2026-27640?

CVE-2026-27640 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.

Is CVE-2026-27640 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (21st percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-27640?

CVE-2026-27640 affects Oocx Tfplan2md. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-27640?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

Does CVE-2026-27640 have an EU (EUVD) identifier?

Yes. CVE-2026-27640 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-8615.

When was CVE-2026-27640 published?

CVE-2026-27640 was published on 2026-02-25 and last updated on 2026-06-17.

CVE-2026-27640

CVE-2026-27640 is a high-severity vulnerability in Oocx Tfplan2md with a CVSS 3.x base score of 7.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-212.

Key facts

Severity: High (CVSS 3.x base score 7.5)
CVSS v4: 8.5
EPSS exploit prediction: 0% (21st percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-8615
Weakness: CWE-212
Affected product: Oocx Tfplan2md
Published: 2026-02-25
Last modified: 2026-06-17

Description

tfplan2md is software for converting Terraform plan JSON files into human-readable Markdown reports. Prior to version 1.26.1, a bug in tfplan2md affected several distinct rendering paths: AzApi resource body properties, AzureDevOps variable groups, Scriban template context variables, and hierarchical sensitivity detection. This caused reports to render values that should have been masked as "(sensitive)" instead. This issue is fixed in v1.26.1. No known workarounds are available.

Frequently asked questions

What is CVE-2026-27640?: tfplan2md is software for converting Terraform plan JSON files into human-readable Markdown reports. Prior to version 1.26.1, a bug in tfplan2md affected several distinct rendering paths: AzApi resource body properties, AzureDevOps variable groups, Scriban template context variables, and hierarchical sensitivity detection. This caused reports to render values that should have been masked as "(sensitive)" instead. This issue is fixed in v1.26.1. No known workarounds are available.
How severe is CVE-2026-27640?: CVE-2026-27640 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.
Is CVE-2026-27640 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (21st percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-27640?: CVE-2026-27640 affects Oocx Tfplan2md. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-27640?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
Does CVE-2026-27640 have an EU (EUVD) identifier?: Yes. CVE-2026-27640 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-8615.
When was CVE-2026-27640 published?: CVE-2026-27640 was published on 2026-02-25 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:oocx:tfplan2md:*:*:*:*:*:*:*:*

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