Vulnerability · Published Apr 7, 2026 · Assigned by GitHub_M

CVE-2026-27949Plane Exposes User Email (PII and part of credential) in GET Parameter

Low 2.0

In plain English

A low-severity information exposure in plane from makeplane. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 7% of all known vulnerabilities).

Severity (CVSS 3.1)2.0Low

Exploit odds (30 days)0.2%top 93.0% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official 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.

Affected products (as reported)

Vendor	Product	Versions
makeplane	plane	< 1.3.0

Weakness: CWE-200, CWE-598 · Vector: CVSS:3.1/AV:N/AC:H/PR:H/UI:R/S:U/C:L/I:N/A:N

References

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