CVE-2021-44465Network attack vector

Unauthorized document following via missing read checks

Published Apr 25, 2023 · Updated Feb 3, 2025

Improper access control in Odoo Community and Enterprise 13.0 and earlier allows remote attackers to follow arbitrary private records. The Website Mail website_message_subscribe controller uses a sudo subscription without first checking record existence, read rights, and record rules. No account is required; a successful subscription exposes future notifications and comments and can grant portal access to the followed record's content.

CVSS severity5.3
Medium
EPSS probability0.46%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Improper access control in Odoo Community and Enterprise 13.0 and earlier allows remote attackers to follow arbitrary private records. The Website Mail website_message_subscribe controller uses a sudo subscription without first checking record existence, read rights, and record rules. No account is required; a successful subscription exposes future notifications and comments and can grant portal access to the followed record's content.

The record

CVE
CVE-2021-44465
Published
Apr 25, 2023
Updated
Feb 3, 2025
Vendor
Odoo
Product
Odoo Community
Classifications
CWE-284, CWE-863, T1213
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Apr 25, 2023CVE publishedPublication date reported by the CVE source.
  2. Feb 3, 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=0 <=13.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Odoo · Odoo Communityversion=0 <=13.0
Odoo · Odoo Enterpriseversion=0 <=13.0

Published CVSS scores

5.3Odoo CNACVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
4.3NVDCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/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 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-284Improper Access Control
CWE-863Incorrect Authorization
T1213Data from Information Repositories

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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