CVE-2024-43789

Denial of service by the absence of restrictions on replies to posts in Discourse

MEDIUM
4.3
CVSS Score
Published: October 7, 2024 at 08:24 PM UTC
Updated: June 17, 2026 at 07:51 AM UTC
1 product affected across 1 vendorDiscourse

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Severity
MEDIUM4.3
Exploit prediction
EPSS 0.5%
SSVC
No known exploit

Description

Discourse is an open source platform for community discussion. A user can create a post with many replies, and then attempt to fetch them all at once. This can potentially reduce the availability of a Discourse instance. This problem has been patched in the latest version of Discourse. All users area are advised to upgrade. There are no known workarounds for this vulnerability.

Affected

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

v ≤ 3.4.0v < 3.3.1v < 3.4.0.beta1beta ≤ v < 3.4.0.beta1stable ≤ v < 3.3.1betastable
Affected range stops below 3.3.1, so it looks safe — our inference, not a vendor statement
Affected range stops below 3.4.0.beta1, 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.

SSVC — Action Prioritization

SSVCNo known exploitAutomatablePartial impact

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

CVSS

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

Quick Info

StatusANALYZED
CWE
CWE-400NVD-CWE-noinfo

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