CVE-2024-45051 - CVE House
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Status published High CVE-2024-45051

Bypass of email address validation via encoded email addresses in Discourse

Vulnerability Description

Discourse is an open source platform for community discussion. A maliciously crafted email address could allow an attacker to bypass domain-based restrictions and gain access to private sites, categories and/or groups. This issue has been patched in the latest stable, beta and tests-passed version of Discourse. All users area are advised to upgrade. There are no known workarounds for this vulnerability.

Impact Analysis

Refer to official advisory for detailed impact metrics.

Remediation

Ensure systems are updated to the latest vendor-supplied patch levels.

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Credits & Attribution

No credits recorded in the NVD database.

References

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CVE-2025-69289
Discourse has insecure default configuration that allows non-admin moderators to takeover any non-staff account via email change
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Discourse moderators can access admin-only reports exposing private upload URLs
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CVE-2025-68934
Discourse Has Denial of Service (DoS) Vulnerability in Drafts Creation Endpoint
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CVE-2025-68933
Discourse non-admin moderators can exfiltrate private content via post ownership transfer
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CVE-2025-68666
Discourse users archives leaked to users with moderation privileges
Medium 5.9

Affected Vendor

Affected Software

discourse
Vulnerable Versions:
stable: < 3.3.2, beta: < 3.4.0.beta2

Timeline

Official Publish: October 7th, 2024
Last Modified: October 8th, 2024
Added to House: July 22nd, 2026

CVSS Vectors

V3: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:N

Weaknesses (CWE)

CWE-287

MITRE ATT&CK TTPs

T1190 Exploit Public-Facing Application
Initial Access
T1078 Valid Accounts
Persistence
T1556 Modify Authentication Process
Credential Access