How severe is CVE-2026-27949?

CVE-2026-27949 has a CVSS 3.x base score of 2.0, rated low severity. It is exploitable over network with high attack complexity, requires high privileges and user interaction. Impact on confidentiality is low, integrity none, and availability none.

Is CVE-2026-27949 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (6th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-27949?

CVE-2026-27949 affects Plane. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-27949?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

Does CVE-2026-27949 have an EU (EUVD) identifier?

Yes. CVE-2026-27949 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-19935.

When was CVE-2026-27949 published?

CVE-2026-27949 was published on 2026-04-07 and last updated on 2026-06-17.

CVE-2026-27949

CVE-2026-27949 is a low-severity vulnerability in Plane with a CVSS 3.x base score of 2.0. 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-200.

Key facts

Severity: Low (CVSS 3.x base score 2.0)
EPSS exploit prediction: 0% (6th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-19935
Weakness: CWE-200
Affected product: Plane
Published: 2026-04-07
Last modified: 2026-06-17

Description

Plane is an an open-source project management tool. Prior to 1.3.0, a vulnerability was identified in Plane's authentication flow where a user's email address is included as a query parameter in the URL during error handling (e.g., when an invalid magic code is submitted). Transmitting personally identifiable information (PII) via GET request query strings is classified as an insecure design practice. The affected code path is located in the authentication utility module (packages/utils/src/auth.ts). This vulnerability is fixed in 1.3.0.

Frequently asked questions

What is CVE-2026-27949?: Plane is an an open-source project management tool. Prior to 1.3.0, a vulnerability was identified in Plane's authentication flow where a user's email address is included as a query parameter in the URL during error handling (e.g., when an invalid magic code is submitted). Transmitting personally identifiable information (PII) via GET request query strings is classified as an insecure design practice. The affected code path is located in the authentication utility module (packages/utils/src/auth.ts). This vulnerability is fixed in 1.3.0.
How severe is CVE-2026-27949?: CVE-2026-27949 has a CVSS 3.x base score of 2.0, rated low severity. It is exploitable over network with high attack complexity, requires high privileges and user interaction. Impact on confidentiality is low, integrity none, and availability none.
Is CVE-2026-27949 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (6th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-27949?: CVE-2026-27949 affects Plane. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-27949?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2026-27949 have an EU (EUVD) identifier?: Yes. CVE-2026-27949 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-19935.
When was CVE-2026-27949 published?: CVE-2026-27949 was published on 2026-04-07 and last updated on 2026-06-17.

References

https://github.com/makeplane/plane/security/advisories/GHSA-8rvg-7w43-p2w2

Affected products (1)

cpe:2.3:a:plane:plane:*:*:*:*:*:*:*:*

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