Vulnerability Report

CVE-2026-27150

Title: Missing authorization in Discourse Data Explorer QueryGroupBookmarkable

Other

Proof Of Concept

No public PoC currently indexed for CVE-2026-27150.

CWE Category CWE-862

Published Date Feb 26, 2026

Modified Date Mar 02, 2026

Exploit Status Not Found

Score 1.3 CVSS v4.0

Exploit Probability (EPSS)

0.05%

Vulnerability Summary

CVE-2026-27150: Discourse is an open source discussion platform. Prior to versions 2025.12.2, 2026.1.1, and 2026.2.0, missing `validate_before_create` authorization in Data Explorer's `QueryGroupBookmarkable` allows any logged-in user to create bookmarks for query groups they don't have access to, enabling metadata disclosure via bookmark reminder notifications. Versions 2025.12.2, 2026.1.1, and 2026.2.0 fix this issue and also make sure `validate_before_create` throws NotImplementedError in BaseBookmarkable if not implemented, to prevent similar issues in the future. No known workarounds are available.

Impacted Vendors

discourse 1

Reference Links

https://github.com/discourse/discourse/security/advisories/GHSA-rw95-54qr-qrw8

CVSS v4.0

Source Entity [email protected]

Severity LOW

1.3

Attack Vector

NETWORK

Complexity

LOW

Privileges

N/A

Interaction

NONE

Confidentiality

N/A

Integrity

N/A

Availability

N/A

Scope

N/A

RAW VECTOR

CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

CVSS v3.1