CVE-2026-33640

CRITICAL

9.8

Description

Outline is a service that allows for collaborative documentation. Outline implements an Email OTP login flow for users not associated with an Identity Provider. Starting in version 0.86.0 and prior to version 1.6.0, Outline does not invalidate OTP codes based on amount or frequency of invalid submissions, rather it relies on the rate limiter to restrict attempts. Consequently, identified bypasses in the rate limiter permit unrestricted OTP code submissions within the codes lifetime. This allows attackers to perform brute force attacks which enable account takeover. Version 1.6.0 fixes the issue.

Details CVE

Score CVSS v3.19.8

SeveriteCRITICAL

Vecteur CVSSCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Vecteur d'attaqueNETWORK

ComplexiteLOW

Privileges requisNONE

Interaction utilisateurNONE

Publie3/26/2026

Derniere modification3/31/2026

Sourcenvd

Observations honeypot0

Produits affectes

getoutline:outline

Faiblesses (CWE)

CWE-307

References

https://github.com/outline/outline/releases/tag/v1.6.0(security-advisories@github.com)

https://github.com/outline/outline/security/advisories/GHSA-cwhc-53hw-qqx6(security-advisories@github.com)

Correlations IOC

Aucune correlation enregistree

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