ByteOS Network

CVE Vulnerability Details :

CVE-2026-27153

PUBLISHED

More Info Official Page

Assigner-GitHub_M

Assigner Org ID-a0819718-46f1-4df5-94e2-005712e83aaa

Published At-26 Feb, 2026 | 21:16

Updated At-26 Feb, 2026 | 21:18

▼CVE Numbering Authority (CNA)

Discourse doesn't prevent moderators from exporting user Chat DMs

Discourse is an open source discussion platform. Prior to versions 2025.12.2, 2026.1.1, and 2026.2.0, moderators could export user Chat DMs via the CSV export endpoint by exploiting an overly permissive allowlist in `can_export_entity?`. The method allowed moderators to export any entity not explicitly blocked instead of restricting to an explicit allowlist. Versions 2025.12.2, 2026.1.1, and 2026.2.0 patch the issue. No known workarounds are available.

Affected Products

Vendor

Civilized Discourse Construction Kit, Inc.

Product

discourse

Versions

Affected

< 2025.12.2
>= 2026.1.0-latest, < 2026.1.1
>= 2026.2.0-latest, < 2026.2.0

Problem Types

Type	CWE ID	Description
CWE	CWE-863	CWE-863: Incorrect Authorization

Type: CWE

CWE ID: CWE-863

Description: CWE-863: Incorrect Authorization

Metrics

Version	Base score	Base severity	Vector
4.0	1.3	LOW	CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:U

Version: 4.0

Base score: 1.3

Base severity: LOW

Vector:

CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:U

References

Hyperlink	Resource
https://github.com/discourse/discourse/security/advisories/GHSA-5cp2-jq8m-33mf	x_refsource_CONFIRM

Hyperlink: https://github.com/discourse/discourse/security/advisories/GHSA-5cp2-jq8m-33mf

Resource:

x_refsource_CONFIRM

Affected Products

Affected

Problem Types

Metrics

Metrics Other Info

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References