CVE-2026-39374: Plane is an an open-source project management tool

Q: How do I fix CVE-2026-39374?

plane: upgrade to 1.3.0. Exact commands for each OS are on this page.

Q: Is CVE-2026-39374 being exploited?

CVE-2026-39374 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-2026-39374 affect?

CVE-2026-39374 affects plane. Severity is medium (CVSS 6.5). Plane is an an open-source project management tool. Prior to 1.3.0, the IssueBulkUpdateDateEndpoint allows a project member (ADMIN or MEMBER) to modify the start_date and target_date of ANY issue across the entire Plane instance, regardless

Q: How urgent is CVE-2026-39374?

Priority 30/100. Public exploit reference

Routine

MEDIUM 6.5UPGRADE

CVE-2026-39374 is a medium-severity flaw (CVSS 6.5) affecting plane. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Plane is an an open-source project management tool. Prior to 1.3.0, the IssueBulkUpdateDateEndpoint allows a project member (ADMIN or MEMBER) to modify the start_date and target_date of ANY issue across the entire Plane instance, regardless of workspace or project membership. The endpoint fetches issues by ID without filtering by workspace or project, enabling cross-boundary data modification. This vulnerability is fixed in 1.3.0.

Why this priority

Public exploit reference

A fixed release or distro patch exists.

Risk facts

CVSS score	6.5 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	Low
User interaction	None
EPSS exploit chance	0.2% (top 89%)
CISA exploited list	No
Weakness	CWE-639
Published	2026-04-07
Last modified	2026-07-24

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

Last updated 2026-07-24 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-04-07 20:16 UTCPublished CVE record published
2026-07-24 21:10 UTCUpdated Record last modified

plane plane UPGRADE

Affected: < 1.3.0

Fixed in: 1.3.0

Safe to downgrade to: no unaffected older release

1. Check installed version

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

2. UPGRADE to 1.3.0 (Debian / Ubuntu)

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

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade plane

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-2026-39374?

plane: upgrade to 1.3.0. Exact commands for each OS are on this page.

Is CVE-2026-39374 being exploited?

CVE-2026-39374 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-2026-39374 affect?

CVE-2026-39374 affects plane. Severity is medium (CVSS 6.5). Plane is an an open-source project management tool. Prior to 1.3.0, the IssueBulkUpdateDateEndpoint allows a project member (ADMIN or MEMBER) to modify the start_date and target_date of ANY issue across the entire Plane instance, regardless

How urgent is CVE-2026-39374?

Priority 30/100. Public exploit reference

Related CVEs

CVE-2026-46558 HIGH 8.3 UPGRADE Plane is an open-source project management tool
CVE-2026-39843 HIGH 7.7 UPGRADE Plane is an an open-source project management tool
CVE-2026-27949 LOW 2.0 UPGRADE Plane is an an open-source project management tool
CVE-2026-10850 MEDIUM 5.4 DOWNGRADE Plane CE 1.3.1 allows a low-privileged project member to submit arbitrary HTML/JS in the description_html fiel

References

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