HOMEVULNERABILITIESCVE-2026-27153
LOW

CVE-2026-27153

CWE-863Published: February 26, 2026· Updated: Mar 2, 2026

2.7
CVSS v3.1
EPSS:0.04%probability of exploitation in 30 daysPercentile:11.3th

Official Description

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.

NVD Source

Technical Analysis

CVE-2026-27153 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

Exploitation requires high 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.High
User InteractionNone
ScopeUnchanged
Impact
ConfidentialityNone
IntegrityLow
AvailabilityNone
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/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-5cp2-jq8m-33mf

All References (1)

→
https://github.com/discourse/discourse/security/advisories/GHSA-5cp2-jq8m-33mfVendor Advisory

Quick Facts

CVE IDCVE-2026-27153
CVSS Score2.7 / 10
SeverityLOW
WeaknessCWE-863
CISA KEVNo
EPSS (30d)0.04%
Affected1 vendor
PublishedFeb 26, 2026

Related CVEs (CWE-863)

CVE-2026-44330
10.0
CVE-2026-48286
10.0
CVE-2026-48303
10.0
CVE-2026-41050
9.9
CVE-2026-28466
9.9
CVE-2026-43948
9.9

Recommended Actions

  • →Apply vendor patches immediately
  • →Monitor CVE-2026-27153 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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