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CVE Vulnerability Details :

CVE-2026-26979

PUBLISHED

More Info Official Page

Assigner-GitHub_M

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

Published At-26 Feb, 2026 | 19:25

Updated At-26 Feb, 2026 | 20:38

▼CVE Numbering Authority (CNA)

Discourse: TL4 users are able to change status of restricted topics

Discourse is an open source discussion platform. Prior to versions 2025.12.2, 2026.1.1, and 2026.2.0, TL4 users are able to close, archive and pin topics in private categories they don't have access to. 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-862	CWE-862: Missing Authorization

Type: CWE

CWE ID: CWE-862

Description: CWE-862: Missing Authorization

Metrics

Version	Base score	Base severity	Vector
4.0	0.0	NONE	CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:N/VI:N/VA:N/SC:N/SI:N/SA:N

Version: 4.0

Base score: 0.0

Base severity: NONE

Vector:

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

References

Hyperlink	Resource
https://github.com/discourse/discourse/security/advisories/GHSA-9c7p-fqc5-c24f	x_refsource_CONFIRM

Hyperlink: https://github.com/discourse/discourse/security/advisories/GHSA-9c7p-fqc5-c24f

Resource:

x_refsource_CONFIRM

▼Authorized Data Publishers (ADP)

CISA ADP Vulnrichment

Affected Products

Affected

Problem Types

Metrics

Metrics Other Info

Impacts

Solutions

Configurations

Workarounds

Exploits

Credits

Timeline

Replaced By

Rejected Reason

References

Affected Products

Metrics

Metrics Other Info

Impacts

Solutions

Configurations

Workarounds

Exploits

Credits

Timeline

Replaced By

Rejected Reason

References