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Vulnerability Details :

CVE-2026-27149

Summary
Assigner-GitHub_M
Assigner Org ID-a0819718-46f1-4df5-94e2-005712e83aaa
Published At-26 Feb, 2026 | 19:52
Updated At-26 Feb, 2026 | 19:52
Rejected At-
Credits

Discourse has SQL injection in PM tag filtering

Discourse is an open source discussion platform. Prior to versions 2025.12.2, 2026.1.1, and 2026.2.0, SQL injection in PM tag filtering (`list_private_messages_tag`) allows bypassing tag filter conditions, potentially disclosing unauthorized private message metadata. Versions 2025.12.2, 2026.1.1, and 2026.2.0 patch the issue. No known workarounds are available.

Vendors
-
Not available
Products
-
Metrics (CVSS)
VersionBase scoreBase severityVector
Weaknesses
Attack Patterns
Solution/Workaround
References
HyperlinkResource Type
EPSS History
Score
Latest Score
-
N/A
No data available for selected date range
Percentile
Latest Percentile
-
N/A
No data available for selected date range
Stakeholder-Specific Vulnerability Categorization (SSVC)
▼Common Vulnerabilities and Exposures (CVE)
cve.org
Assigner:GitHub_M
Assigner Org ID:a0819718-46f1-4df5-94e2-005712e83aaa
Published At:26 Feb, 2026 | 19:52
Updated At:26 Feb, 2026 | 19:52
Rejected At:
▼CVE Numbering Authority (CNA)
Discourse has SQL injection in PM tag filtering

Discourse is an open source discussion platform. Prior to versions 2025.12.2, 2026.1.1, and 2026.2.0, SQL injection in PM tag filtering (`list_private_messages_tag`) allows bypassing tag filter conditions, potentially disclosing unauthorized private message metadata. 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.discourse
Product
discourse
Versions
Affected
  • < 2025.12.2
  • >= 2026.1.0-latest, < 2026.1.1
  • >= 2026.2.0-latest, < 2026.2.0
Problem Types
TypeCWE IDDescription
CWECWE-89CWE-89: Improper Neutralization of Special Elements used in an SQL Command ('SQL Injection')
Type: CWE
CWE ID: CWE-89
Description: CWE-89: Improper Neutralization of Special Elements used in an SQL Command ('SQL Injection')
Metrics
VersionBase scoreBase severityVector
4.04.9MEDIUM
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:U
Version: 4.0
Base score: 4.9
Base severity: MEDIUM
Vector:
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:U
Metrics Other Info
Impacts
CAPEC IDDescription
Solutions
Configurations
Workarounds
Exploits
Credits
Timeline
EventDate
Replaced By
Rejected Reason
References
HyperlinkResource
https://github.com/discourse/discourse/security/advisories/GHSA-m6qf-h49w-h38w
x_refsource_CONFIRM
Hyperlink: https://github.com/discourse/discourse/security/advisories/GHSA-m6qf-h49w-h38w
Resource:
x_refsource_CONFIRM
Information is not available yet
▼National Vulnerability Database (NVD)
nvd.nist.gov
Source:security-advisories@github.com
Published At:26 Feb, 2026 | 21:28
Updated At:27 Feb, 2026 | 14:06

Discourse is an open source discussion platform. Prior to versions 2025.12.2, 2026.1.1, and 2026.2.0, SQL injection in PM tag filtering (`list_private_messages_tag`) allows bypassing tag filter conditions, potentially disclosing unauthorized private message metadata. Versions 2025.12.2, 2026.1.1, and 2026.2.0 patch the issue. No known workarounds are available.

CISA Catalog
Date AddedDue DateVulnerability NameRequired Action
N/A
Date Added: N/A
Due Date: N/A
Vulnerability Name: N/A
Required Action: N/A
Metrics
TypeVersionBase scoreBase severityVector
Secondary4.04.9MEDIUM
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/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
Type: Secondary
Version: 4.0
Base score: 4.9
Base severity: MEDIUM
Vector:
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/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
CPE Matches
Weaknesses
CWE IDTypeSource
CWE-89Primarysecurity-advisories@github.com
CWE ID: CWE-89
Type: Primary
Source: security-advisories@github.com
Evaluator Description
Evaluator Impact

Evaluator Solution

Vendor Statements
References
HyperlinkSourceResource
https://github.com/discourse/discourse/security/advisories/GHSA-m6qf-h49w-h38wsecurity-advisories@github.com
N/A
Hyperlink: https://github.com/discourse/discourse/security/advisories/GHSA-m6qf-h49w-h38w
Source: security-advisories@github.com
Resource: N/A

Change History

0
Information is not available yet

Similar CVEs

1Records found
CVE-2026-27162
Matching Score-8
Assigner-GitHub, Inc.
ShareView Details
Matching Score-8
Assigner-GitHub, Inc.
CVSS Score-4.9||MEDIUM
EPSS-0.03% / 9.77%
||
7 Day CHG~0.00%
Published-26 Feb, 2026 | 19:58
Updated-27 Feb, 2026 | 14:06
Rejected-Not Available
Known To Be Used In Ransomware Campaigns?-Not Available
KEV Added-Not Available
KEV Action Due Date-Not Available
DIscourse doesn't prevent whispers to leak in excerpts

Discourse is an open source discussion platform. Prior to versions 2025.12.2, 2026.1.1, and 2026.2.0, `posts_nearby` was checking topic access but then returning all posts regardless of type, including whispers that should only be visible to whisperers. Use `Post.secured(guardian)` to properly filter post types based on user permissions. Versions 2025.12.2, 2026.1.1, and 2026.2.0 patch the issue. No known workarounds are available.

Action-Not Available
Vendor-Civilized Discourse Construction Kit, Inc.
Product-discourse
CWE ID-CWE-200
Exposure of Sensitive Information to an Unauthorized Actor
Details not found