CVE-2026-46558

Description

Plane is an open-source project management tool. Prior to version 1.3.1, there is a cross-workspace asset authorization bypass lets any authenticated user read, copy, delete, and overwrite assets in other Plane workspaces. This issue has been patched in version 1.3.1.

CVSS v3.1 Score

8.3

HIGH

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:L

EPSS — Exploit Prediction

0.0028

Probability of exploitation

0.20%

Percentile rank

EPSS estimates the probability that this vulnerability will be exploited in the wild within the next 30 days. A higher score means more likely to be exploited.

Weakness Type (CWE)

CWE-639 CWE-639

CWE-862 Missing Authorization

Affected Products

Vendor	Product	Versions
plane	plane	< 1.3.1

References

Advisories & Patches

https://github.com/makeplane/plane/security/advisories/GHSA-qw87-v5w3-6vxx https://github.com/makeplane/plane/security/advisories/GHSA-qw87-v5w3-6vxx

Exploits

https://github.com/makeplane/plane/security/advisories/GHSA-qw87-v5w3-6vxx https://github.com/makeplane/plane/security/advisories/GHSA-qw87-v5w3-6vxx

Other References

https://github.com/makeplane/plane/releases/tag/v1.3.1

Frequently Asked Questions

What is CVE-2026-46558? +

Plane is an open-source project management tool. Prior to version 1.3.1, there is a cross-workspace asset authorization bypass lets any authenticated user read, copy, delete, and overwrite assets in other Plane workspaces. This issue has been patched in version 1.3.1. It has a CVSS v3.1 base score of 8.3 (HIGH).

How severe is CVE-2026-46558? +

CVE-2026-46558 has a CVSS v3.1 score of 8.3 out of 10, rated HIGH. This is a high-severity vulnerability that should be prioritized for patching. The EPSS score is 0.0028, placing it in the 0th percentile for exploitation probability.

What products are affected by CVE-2026-46558? +

CVE-2026-46558 affects products from plane, specifically: plane. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2026-46558? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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