CVE-2022-39355Network attack vector

Account takeover via unverified Patreon email acceptance

Published Oct 26, 2022 · Updated Apr 23, 2025

Improper authentication in Discourse Patreon before commit 846d0121 allows remote attackers to take over forum accounts through Patreon login. PatreonAuthenticator accepted the OAuth email from raw_info without passing is_email_verified to the primary-email verification gate. Patreon social login must be enabled, and the attacker must present an unverified Patreon email matching the victim's forum account.

CVSS severity9.1
Critical
EPSS probability0.83%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Improper authentication in Discourse Patreon before commit 846d0121 allows remote attackers to take over forum accounts through Patreon login. PatreonAuthenticator accepted the OAuth email from raw_info without passing is_email_verified to the primary-email verification gate. Patreon social login must be enabled, and the attacker must present an unverified Patreon email matching the victim's forum account.

The record

CVE
CVE-2022-39355
Published
Oct 26, 2022
Updated
Apr 23, 2025
Vendor
Discourse
Product
Discourse Patreon
Classifications
CWE-287, T1078
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Oct 26, 2022CVE publishedPublication date reported by the CVE source.
  2. Apr 23, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=< 846d012151514b35ce42a1636c7d70f6dcee879e

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Discourse · Discourse Patreonversion=< 846d012151514b35ce42a1636c7d70f6dcee879e

Published CVSS scores

9.8NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
9.1GitHub, Inc.CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-287Improper Authentication
T1078Valid Accounts

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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