Plane Exposes User Email (PII and part of credential) in GET Parameter

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Summary

CVECVE-2026-27949
StatePUBLISHED
AssignerGitHub_M
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-04-07 21:17:15 UTC
Updated2026-04-08 21:27:00 UTC
DescriptionPlane 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.

Risk And Classification

Primary CVSS: v3.1 2 LOW from [email protected]

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

EPSS: 0.000310000 probability, percentile 0.088490000 (date 2026-04-08)

Problem Types: CWE-200 | CWE-598 | CWE-200 CWE-200: Exposure of Sensitive Information to an Unauthorized Actor | CWE-598 CWE-598: Use of GET Request Method With Sensitive Query Strings

VersionSourceTypeScoreSeverityVector
3.1[email protected]Secondary2LOWCVSS:3.1/AV:N/AC:H/PR:H/UI:R/S:U/C:L/I:N/A:N
3.1CNADECLARED2LOWCVSS:3.1/AV:N/AC:H/PR:H/UI:R/S:U/C:L/I:N/A:N

CVSS v3.1 Breakdown

Attack Vector
Network
Attack Complexity
High
Privileges Required
High
User Interaction
Required
Scope
Unchanged
Confidentiality
Low
Integrity
None
Availability
None

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

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Makeplane Plane affected < 1.3.0 Not specified

References

ReferenceSourceLinkTags
github.com/makeplane/plane/security/advisories/GHSA-8rvg-7w43-p2w2 [email protected] github.com
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