October CMS Session ID not invalidated after logout
Impact
When logging out, the session ID was not invalidated. This is not a problem while the user is logged out, but as soon as the user logs back in the old session ID would be valid again; which means that anyone that gained access to the old session cookie would be able to act as the logged in user. This is not a major concern for the majority of cases, since it requires a malicious party gaining access to the session cookie in the first place, but nevertheless has been fixed.
Patches
Issue has been patched in Build 472 (v1.0.472) and v1.1.2.
Workarounds
Apply https://github.com/octobercms/library/commit/642f597489e6f644d4bd9a0c267e864cabead024 to your installation manually if unable to upgrade to Build 472 or v1.1.2.
References
- Reported by Anisio (Brazilian Information Security Analyst)
- http://cve.circl.lu/cve/CVE-2021-3311
For more information
If you have any questions or comments about this advisory:
- Email us at hello@octobercms.com
Threat assessment:
<img width="699" alt="Screen Shot 2021-02-07 at 11 50 35 PM" src="https://user-images.githubusercontent.com/7253840/107180881-51eaf000-699f-11eb-8828-333128faf2a6.png">Software afectado
Haz clic en una tecnología para ver todas sus vulnerabilidades.
| Plataforma | Paquete | Versiones vulnerables | Corregida en |
|---|---|---|---|
| Paquete de Composer | october/rain | < 1.0.472, >= 1.1.0, < 1.1.2 | 1.0.472, 1.1.2 |
Referencias
- https://github.com/octobercms/october/security/advisories/GHSA-7ggw-h8pp-r95r
- https://nvd.nist.gov/vuln/detail/CVE-2021-3311
- https://github.com/octobercms/library/commit/642f597489e6f644d4bd9a0c267e864cabead024
- https://anisiosantos.me/october-cms-token-reactivation
- https://octobercms.com/forum/chan/announcements
- https://packagist.org/packages/october/rain
- http://cve.circl.lu/cve/CVE-2021-3311
- Vector CVSS
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H- Debilidad (CWE)
CWE-613- Plataforma
- Composer
- Paquete
october/rain- Publicada
- 10.02.2021
- Actualizado
- 11.10.2026 10:22
Fuentes y licencias
OSV / GitHub Advisory Database - GHSA-7ggw-h8pp-r95r - CC BY 4.0
Historial de vulnerabilidades: october/rain
Todas las vulnerabilidades publicadas de este paquete (Paquete de Composer), de la más reciente a la más antigua. Muestra si es un fallo aislado o un paquete que hay que vigilar.
- Entradas en total
- 6
- Primera → última
- 08.2020 04.2026
- Sin corrección
- 0
- Explotada en ataques
- 0
Distribución por gravedad
- Crítica 1
- Media 5
Divulgaciones por año
- 2020: 1
- 2021: 1
- 2022: 1
- 2023: 0
- 2024: 0
- 2025: 0
- 2026: 3
-
October CMS Session ID not invalidated after logout esta entrada
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