vulntracker.iovulntracker.io
© 2026 vulntracker.io

CVE-2023-36466

Topic Title Validation Skipped When Changing Category in Discourse

MEDIUM
4.3
CVSS Score
Published: July 14, 2023 at 09:14 PM UTC
Updated: June 17, 2026 at 06:06 AM UTC
1 product affected across 1 vendorDiscourse

Using discourse by discourse?

Get instant alerts when new vulnerabilities affect discourse - before attackers find them.

Real-time alertsTrack your software stackFree plan available
Start FreeSign In
Severity
MEDIUM4.3
Exploit prediction
EPSS 0.4%
SSVC
No known exploit

Description

Discourse is an open source discussion platform. When editing a topic, there is a vulnerability that enables a user to bypass the topic title validations for things like title length, number of emojis in title and blank topic titles. The issue is patched in the latest stable, beta and tests-passed version of Discourse.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Discourse· Discourse
95%
v < 3.0.5v < 3.1.0.beta61.1.0 beta11.1.0 beta21.1.0 beta31.1.0 beta41.1.0 beta51.1.0 beta61.1.0 beta6b1.1.0 beta71.1.0 beta81.2.0 beta11.2.0 beta21.2.0 beta31.2.0 beta41.2.0 beta51.2.0 beta61.2.0 beta71.2.0 beta81.2.0 beta91.3.0 beta11.3.0 beta101.3.0 beta111.3.0 beta21.3.0 beta31.3.0 beta41.3.0 beta51.3.0 beta61.3.0 beta71.3.0 beta81.3.0 beta91.4.0 beta11.4.0 beta101.4.0 beta111.4.0 beta121.4.0 beta21.4.0 beta31.4.0 beta41.4.0 beta51.4.0 beta61.4.0 beta71.4.0 beta81.4.0 beta91.5.0 beta11.5.0 beta101.5.0 beta111.5.0 beta121.5.0 beta131.5.0 beta13b1.5.0 beta141.5.0 beta21.5.0 beta31.5.0 beta41.5.0 beta51.5.0 beta61.5.0 beta71.5.0 beta81.5.0 beta91.6.0 beta11.6.0 beta101.6.0 beta111.6.0 beta121.6.0 beta21.6.0 beta31.6.0 beta41.6.0 beta51.6.0 beta61.6.0 beta71.6.0 beta81.6.0 beta91.7.0 beta11.7.0 beta101.7.0 beta111.7.0 beta21.7.0 beta31.7.0 beta41.7.0 beta51.7.0 beta61.7.0 beta71.7.0 beta81.7.0 beta91.8.0 beta11.8.0 beta101.8.0 beta111.8.0 beta121.8.0 beta131.8.0 beta21.8.0 beta31.8.0 beta41.8.0 beta51.8.0 beta61.8.0 beta71.8.0 beta81.8.0 beta91.9.0 beta11.9.0 beta101.9.0 beta111.9.0 beta121.9.0 beta131.9.0 beta141.9.0 beta151.9.0 beta161.9.0 beta171.9.0 beta21.9.0 beta31.9.0 beta41.9.0 beta51.9.0 beta61.9.0 beta71.9.0 beta81.9.0 beta92.0.0 beta12.0.0 beta102.0.0 beta22.0.0 beta32.0.0 beta42.0.0 beta52.0.0 beta62.0.0 beta72.0.0 beta82.0.0 beta92.1.0 beta12.1.0 beta22.1.0 beta32.1.0 beta42.1.0 beta52.1.0 beta62.2.0 beta12.2.0 beta102.2.0 beta22.2.0 beta32.2.0 beta42.2.0 beta52.2.0 beta62.2.0 beta72.2.0 beta82.2.0 beta92.3.0 beta12.3.0 beta102.3.0 beta112.3.0 beta22.3.0 beta32.3.0 beta42.3.0 beta52.3.0 beta62.3.0 beta72.3.0 beta82.3.0 beta92.4.0 beta12.4.0 beta102.4.0 beta112.4.0 beta22.4.0 beta32.4.0 beta42.4.0 beta52.4.0 beta62.4.0 beta72.4.0 beta82.4.0 beta92.5.0 beta12.5.0 beta22.5.0 beta32.5.0 beta42.5.0 beta52.5.0 beta62.5.0 beta72.6.0 beta12.6.0 beta22.6.0 beta32.6.0 beta42.6.0 beta52.6.0 beta62.7.0 beta12.7.0 beta22.7.0 beta32.7.0 beta42.7.0 beta52.7.0 beta62.7.0 beta72.7.0 beta82.7.0 beta92.8.0 beta12.8.0 beta102.8.0 beta112.8.0 beta22.8.0 beta32.8.0 beta42.8.0 beta52.8.0 beta62.8.0 beta72.8.0 beta82.8.0 beta92.9.0 beta12.9.0 beta102.9.0 beta112.9.0 beta122.9.0 beta132.9.0 beta142.9.0 beta22.9.0 beta32.9.0 beta42.9.0 beta52.9.0 beta62.9.0 beta72.9.0 beta82.9.0 beta93.0.0 beta153.0.0 beta163.1.0 beta13.1.0 beta23.1.0 beta5
Affected range stops below 3.0.5, so it looks safe — our inference, not a vendor statement
Affected range stops below 3.1.0.beta6, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

Patch and advisory references

References (1)

x_refsource_CONFIRMVendor Advisory
Source: [email protected]
https://github.com/discourse/discourse/security/advisories/GHSA-4hjh-wg43-p932

SSVC — Action Prioritization

SSVCNo known exploitNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

4.3MEDIUM[email protected]
Attack Vector
NETWORK
Complexity
LOW
Privileges
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
LOW
Availability
NONE
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-20CWE-287

Get alerted

Stop reading CVE feeds looking for your own stack

Track the products you run and VulnTracker tells you when a new CVE affects them — with what is known about fixing it, and nothing about the rest.

Create accountSign in
Free plan, no card