HOMEVULNERABILITIESCVE-2026-27935
MEDIUM

CVE-2026-27935

CWE-201Published: March 19, 2026· Updated: Mar 23, 2026

6.5
CVSS v3.1
EPSS:0.04%probability of exploitation in 30 daysPercentile:11.5th

Official Description

Discourse is an open-source discussion platform. Versions prior to 2026.3.0-latest.1, 2026.2.1, and 2026.1.2 have a vulnerability in an API endpoint that discloses private topic metadata of admin users to moderator users even if the moderators do not have access to the private topics. Versions 2026.3.0-latest.1, 2026.2.1, and 2026.1.2 contain a patch. No known workarounds are available.

NVD Source

Technical Analysis

CVE-2026-27935 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.

A successful exploit results in complete confidentiality breach (data exposure), with a CVSS base score of 6.5.

CVSS v3.1 Vector Breakdown

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

PATCHhttps://github.com/discourse/discourse/commit/c0f6e9a903800de0dda65c114418ae703d8a51fc
PATCHhttps://github.com/discourse/discourse/commit/d8dbb4cb189cded8c9e8b3ada859fc0db3f41897
PATCHhttps://github.com/discourse/discourse/commit/f37e4fdf8391e4a54f1885a3a5514d390eb28bab
ADVISORYhttps://github.com/discourse/discourse/security/advisories/GHSA-wxqr-r4wv-cw76

All References (4)

→
https://github.com/discourse/discourse/commit/c0f6e9a903800de0dda65c114418ae703d8a51fcPatch
→
https://github.com/discourse/discourse/commit/d8dbb4cb189cded8c9e8b3ada859fc0db3f41897Patch
→
https://github.com/discourse/discourse/commit/f37e4fdf8391e4a54f1885a3a5514d390eb28babPatch
→
https://github.com/discourse/discourse/security/advisories/GHSA-wxqr-r4wv-cw76Vendor Advisory

Quick Facts

CVE IDCVE-2026-27935
CVSS Score6.5 / 10
SeverityMEDIUM
WeaknessCWE-201
CISA KEVNo
EPSS (30d)0.04%
Affected1 vendor
PublishedMar 19, 2026

Related CVEs (CWE-201)

CVE-2026-39912
9.1
CVE-2025-11500
8.7
CVE-2026-5483
8.5
CVE-2026-54848
8.3
CVE-2026-46481
8.3
CVE-2026-32829
8.2

Recommended Actions

  • →Apply vendor patches immediately
  • →Monitor CVE-2026-27935 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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