CVE-2021-36801Public exploitNetwork attack vector

Cross-tenant data access via unchecked company reassignment

Published Aug 4, 2021 · Updated Sep 16, 2024

Authorization bypass in Akaunting 2.1.12 and earlier allows remote authenticated users to read and modify another company's data. The profile update handler trusts the user-controlled companies[0] field and reassigns the account to the supplied company ID without an authorization check. Any valid user account is sufficient, and successful reassignment exposes cross-tenant company information and permits changes under the other company.

CVSS severity8.1
High
EPSS probability1.07%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Authorization bypass in Akaunting 2.1.12 and earlier allows remote authenticated users to read and modify another company's data. The profile update handler trusts the user-controlled companies[0] field and reassigns the account to the supplied company ID without an authorization check. Any valid user account is sufficient, and successful reassignment exposes cross-tenant company information and permits changes under the other company.

The record

CVE
CVE-2021-36801
Published
Aug 4, 2021
Updated
Sep 16, 2024
Vendor
Akaunting
Product
Akaunting
Classifications
CWE-639, T1078
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Aug 4, 2021CVE publishedPublication date reported by the CVE source.
  2. Sep 16, 2024Record 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=2.1.12 <=2.1.12

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Akaunting · Akauntingversion=2.1.12 <=2.1.12

Published CVSS scores

8.1Rapid7, Inc.CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N
5.5NIST NVDAV:N/AC:L/Au:S/C:P/I:P/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
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-639Authorization Bypass Through User-Controlled Key
T1078Valid Accounts

Public exploit references

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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