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CVE-2023-23615

Malicious users in Discourse can create spam topics as any user due to improper access control

MEDIUM
5.3
CVSS Score
Published: February 3, 2023 at 09:57 PM UTC
Updated: June 17, 2026 at 05:37 AM UTC
1 product affected across 1 vendorDiscourse

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Severity
MEDIUM5.3
Exploit prediction
EPSS 0.5%
SSVC
No known exploit

Description

Discourse is an open source discussion platform. The embeddable comments can be exploited to create new topics as any user but without any clear title or content. This issue is patched in the latest stable, beta and tests-passed versions of Discourse. As a workaround, disable embeddable comments by deleting all embeddable hosts.

Affected

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

Discourse· Discourse
95%
v ≤ 3.0.0v < 3.0.1v < 3.1.0.beta21.1.0 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 beta1
Affected range stops below 3.0.1, so it looks safe — our inference, not a vendor statement
Affected range stops below 3.1.0.beta2, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet, and no fixed version or vendor advisory is recorded against it.

References (1)

x_refsource_CONFIRMThird Party Advisory
Source: [email protected]
https://github.com/discourse/discourse/security/advisories/GHSA-7mf3-5v84-wxq8

SSVC — Action Prioritization

SSVCNo known exploitAutomatablePartial impact

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

CVSS

5.3MEDIUMGitHub_M
Attack Vector
NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
LOW
Availability
NONE
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-284

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