Vulnerability Report

CVE-2026-33408

Title: Discourse PM/Private Category Post Edit Information Disclosure

Other

Proof Of Concept

No public PoC currently indexed for CVE-2026-33408.

CWE Category CWE-862

Published Date Mar 19, 2026

Modified Date Mar 24, 2026

Exploit Status Not Found

Score 2.2 CVSS v3.1

Exploit Probability (EPSS)

0.01%

Vulnerability Summary

CVE-2026-33408: 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.

Impacted Vendors

discourse 1

Reference Links

https://github.com/discourse/discourse/commit/3bf3793a708662716c0a4eaf64ae091abe71ab4c https://github.com/discourse/discourse/commit/473288219e93cd17576cf15e4f0b9e388a31d0c1 https://github.com/discourse/discourse/commit/62721429d4402505d21280bcbe5894032447d800 https://github.com/discourse/discourse/security/advisories/GHSA-wf9r-386h-g29c

CVSS v3.1

Source Entity [email protected]

Severity LOW

2.7

Attack Vector

NETWORK

Complexity

LOW

Privileges

N/A

Interaction

NONE

Confidentiality

N/A

Integrity

N/A

Availability

N/A

Scope

UNCHANGED

RAW VECTOR CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:N/A:N

CVSS v3.1

Source Entity [email protected]

Severity LOW

2.2

Attack Vector

NETWORK

Complexity

HIGH

Privileges

N/A

Interaction

NONE

Confidentiality

N/A

Integrity

N/A

Availability

N/A

Scope

UNCHANGED

RAW VECTOR CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:L/I:N/A:N

Associated Attack Patterns (CAPEC)

Total: Patterns

CVE-2026-33408 Exploits & PoCs (Proof Of Concept)

No public PoCs found in our database for this CVE.

March 24, 2026 MODIFIED

Vulnerability data updated via NVD.

March 24, 2026 MODIFIED

Vulnerability data updated via NVD.

March 20, 2026 MODIFIED

Vulnerability data updated via NVD.

March 19, 2026 MODIFIED

Vulnerability data updated via NVD.

Attack Vector Matrix

Access Vector NETWORK

Complexity LOW

Privileges N/A

Interaction NONE

CVSS Vector String


                                    CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:N/A:N

Affected Stack

No specific products linked.