HOMEVULNERABILITIESCVE-2026-33408
LOW

CVE-2026-33408

CWE-862Published: March 19, 2026· Updated: Mar 24, 2026

2.7
CVSS v3.1
EPSS:0.02%probability of exploitation in 30 daysPercentile:6.5th

Official Description

Discourse is an open-source discussion platform. Prior to versions 2026.3.0-latest.1, 2026.2.1, and 2026.1.2, moderators were able to see the first 40 characters of post edits in PMs and private categories. 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-2026-33408 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
ConfidentialityLow
IntegrityNone
AvailabilityNone
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/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/3bf3793a708662716c0a4eaf64ae091abe71ab4c
PATCHhttps://github.com/discourse/discourse/commit/473288219e93cd17576cf15e4f0b9e388a31d0c1
PATCHhttps://github.com/discourse/discourse/commit/62721429d4402505d21280bcbe5894032447d800
ADVISORYhttps://github.com/discourse/discourse/security/advisories/GHSA-wf9r-386h-g29c

All References (4)

→
https://github.com/discourse/discourse/commit/3bf3793a708662716c0a4eaf64ae091abe71ab4cPatch
→
https://github.com/discourse/discourse/commit/473288219e93cd17576cf15e4f0b9e388a31d0c1Patch
→
https://github.com/discourse/discourse/commit/62721429d4402505d21280bcbe5894032447d800Patch
→
https://github.com/discourse/discourse/security/advisories/GHSA-wf9r-386h-g29cVendor Advisory

Quick Facts

CVE IDCVE-2026-33408
CVSS Score2.7 / 10
SeverityLOW
WeaknessCWE-862
CISA KEVNo
EPSS (30d)0.02%
Affected1 vendor
PublishedMar 19, 2026

Related CVEs (CWE-862)

CVE-2025-30416
10.0
CVE-2026-0092
10.0
CVE-2026-2031
10.0
CVE-2026-33712
10.0
CVE-2026-34976
10.0
CVE-2026-44442
9.9

Recommended Actions

  • →Apply vendor patches immediately
  • →Monitor CVE-2026-33408 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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