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Description

A security vulnerability has been detected in chatwoot up to 4.11.1. The affected element is an unknown function of the file /app/login of the component Signup Endpoint. Such manipulation of the argument signupEnabled with the input true leads to improper authorization. The attack can be executed remotely. The exploit has been disclosed publicly and may be used. The vendor was contacted early about this disclosure but did not respond in any way.

PUBLISHED Reserved 2026-03-27 | Published 2026-03-27 | Updated 2026-03-31 | Assigner VulDB




MEDIUM: 6.9CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P
HIGH: 7.3CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L/E:P/RL:X/RC:R
HIGH: 7.3CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L/E:P/RL:X/RC:R
7.5AV:N/AC:L/Au:N/C:P/I:P/A:P/E:POC/RL:ND/RC:UR

Problem types

Improper Authorization

Incorrect Privilege Assignment

Timeline

2026-03-27:Advisory disclosed
2026-03-27:VulDB entry created
2026-03-27:VulDB entry last update

Credits

Zabi_Ullah (VulDB User) reporter

VulDB coordinator

References

vuldb.com/?id.353877 (VDB-353877 | chatwoot Signup Endpoint login improper authorization) vdb-entry technical-description

vuldb.com/?ctiid.353877 (VDB-353877 | CTI Indicators (IOB, IOC, TTP, IOA)) signature permissions-required

vuldb.com/?submit.772515 (Submit #772515 | chatwoot 4.11.1 Business Logic Errors) third-party-advisory

cve.org (CVE-2026-4990)

nvd.nist.gov (CVE-2026-4990)

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