CVE-2026-27640: tfplan2md is software for converting Terraform plan JSON files into human-readable Markdown reports

Q: How do I fix CVE-2026-27640?

tfplan2md: upgrade to 1.26.1. Exact commands for each OS are on this page.

Q: Is CVE-2026-27640 being exploited?

CVE-2026-27640 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2026-27640 affect?

CVE-2026-27640 affects tfplan2md. Severity is high (CVSS 7.5). 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

Q: How urgent is CVE-2026-27640?

Priority 38/100. High severity; Remotely exploitable, no login, no user action

Routine

HIGH 7.5REMOTEUPGRADE

CVE-2026-27640 is a high-severity flaw (CVSS 7.5) affecting tfplan2md. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

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. N

Why this priority

High severity
Remotely exploitable, no login, no user action

A fixed release or distro patch exists.

Risk facts

CVSS score	7.5 (High)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	0.3% (top 73%)
CISA exploited list	No
Weakness	CWE-212
Published	2026-02-25
Last modified	2026-06-17

Publisher (CNA): GitHub, Inc. · Vendor: oocx

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-02-25 04:16 UTCPublished CVE record published
2026-06-17 10:27 UTCUpdated Record last modified

oocx tfplan2md UPGRADE

Affected: < 1.26.1

Fixed in: 1.26.1

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy tfplan2md || rpm -q tfplan2md || tfplan2md --version

2. UPGRADE to 1.26.1 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade tfplan2md

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade tfplan2md

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2026-27640?

tfplan2md: upgrade to 1.26.1. Exact commands for each OS are on this page.

Is CVE-2026-27640 being exploited?

CVE-2026-27640 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2026-27640 affect?

CVE-2026-27640 affects tfplan2md. Severity is high (CVSS 7.5). 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

How urgent is CVE-2026-27640?

Priority 38/100. High severity; Remotely exploitable, no login, no user action

Software pages

Terraform vulnerabilities

References

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