HOMEVULNERABILITIESCVE-2026-28218
MEDIUM

CVE-2026-28218

CWE-284Published: February 26, 2026· Updated: Mar 2, 2026

5.4
CVSS v3.1
EPSS:0.03%probability of exploitation in 30 daysPercentile:8.8th

Official Description

Discourse is an open source discussion platform. Prior to versions 2025.12.2, 2026.1.1, and 2026.2.0, fail-open access control in Data Explorer plugin allows any authenticated user to execute SQL queries that have no explicit group assignments, including built-in system queries. Versions 2025.12.2, 2026.1.1, and 2026.2.0 patch the issue. As a workaround, either explicitly set group permissions on each Data Explorer query that doesn't have permissions, or disable discourse-data-explorer plugin.

NVD Source

Technical Analysis

CVE-2026-28218 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

Exploitation requires low privileges, which limits the exposure to scenarios where an attacker has already gained initial access.

CVSS v3.1 Vector Breakdown

Exploitability
Attack VectorNetwork
Attack ComplexityLow
Privileges Req.Low
User InteractionNone
ScopeUnchanged
Impact
ConfidentialityLow
IntegrityLow
AvailabilityNone
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N

Affected Vendors & Products

discourse1 product
discourse
Source: NVD CPE · 2 total CPE entries

Exploit & PoC Resources

NO KNOWN EXPLOITNo public exploit confirmed at this time
Exploit-DB
Offensive Security exploit database
GitHub PoC Search
Community PoC repositories
Rapid7 / Metasploit
Metasploit module search
PacketStorm
Security advisories & exploits
NVD Detail
Official NIST entry
MITRE CVE
CVE Program entry
External links open in a new tab. Always verify in a controlled environment before use.

Official Patches & Advisories

ADVISORYhttps://github.com/discourse/discourse/security/advisories/GHSA-jxrc-72mr-mfh5

All References (1)

→
https://github.com/discourse/discourse/security/advisories/GHSA-jxrc-72mr-mfh5Vendor Advisory

Quick Facts

CVE IDCVE-2026-28218
CVSS Score5.4 / 10
SeverityMEDIUM
WeaknessCWE-284
CISA KEVNo
EPSS (30d)0.03%
Affected1 vendor
PublishedFeb 26, 2026

Related CVEs (CWE-284)

CVE-2026-35435
10.0
CVE-2026-48908
KEV10.0
CVE-2026-35308
10.0
CVE-2026-46978
10.0
CVE-2026-48939
10.0
CVE-2026-50746
10.0

Recommended Actions

  • →Apply vendor patches immediately
  • →Monitor CVE-2026-28218 in threat intel feeds
  • →Review IDS/IPS signatures for exploitation attempts
Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWATCH.COM. CVE data is provided under the NVD usage policy.
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