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CVE-2026-32244

Discourse: Cached outdated summaries can leak removed content

Published: May 19, 2026Updated: Jun 1, 2026 Sources: CVE List NVDCWE-200
NVD MITRE
5.3CVSSMEDIUM
EPSS Score
0.2%
Top 86.1%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Workaround Only

Description

Discourse is an open-source discussion platform. In versions prior to 2026.1.4, 2026.3.1, 2026.4.1 and 2026.5.0-latest.1, outdated cached AI summaries can leak removed content to anonymous and unprivileged users who cannot regenerate summaries. This issue has been fixed in versions 2026.1.4, 2026.3.1, 2026.4.1 and 2026.5.0-latest.1. To work around this issue, restrict summary generation by tightening the allowed groups on the summarization Personas.

CVSS Vector Breakdown

AV:NAC:LPR:NUI:NS:UC:LI:NA:N
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:NPrivileges Required
None
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:LConfidentiality
Low
I:NIntegrity
None
A:NAvailability
None
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Weaknesses

CWE-200CWE-524CWE-672NVD-CWE-noinfo

Affected Products

discoursediscourseWeb & CMS Plugins
discoursecommercialUSWeb & CMS Pluginsaka discourse.org

Attack Graph

Products CVE Techniques Tactics

Click technique nodes to view MITRE ATT&CK details. Scroll to zoom, drag to pan.

Exploitability

Workaround Available

MITRE ATT&CK

1 technique
Collection
View detailed technique mapping

References

https://github.com/discourse/discourse/security/advisories/GHSA-hjmg-2mww-vfvx
github.com

Timeline

Published
May 19, 2026
Last Updated
Jun 1, 2026

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