Deleted Admin Can Sign In to Admin Interface
Impact
Assuming an administrator once had previous access to the admin interface, they may still be able to sign in to the backend using October CMS v2.0.
Patches
The issue has been patched in v2.1.12
Workarounds
-
Reset the password of the deleted accounts to prevent them from signing in.
-
Please contact hello@octobercms.com for code change instructions if you are unable to upgrade.
References
Credits to: • Daniel Bidala
For more information
If you have any questions or comments about this advisory:
- Email us at hello@octobercms.com
Affected software
Click a technology to see all vulnerabilities affecting it.
| Platform | Package | Vulnerable versions | Fixed in |
|---|---|---|---|
| Composer package | october/october | >= 2.1.0, < 2.1.12 | 2.1.12 |
| Composer package | october/system | >= 2.1.0, < 2.1.12 | 2.1.12 |
References
- CVSS vector
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H- Weakness (CWE)
CWE-287- Platform
- Composer
- Package
october/october, october/system- Disclosed
- 06.10.2021
- Updated
- 11.10.2026 10:22
Sources and licenses
OSV / GitHub Advisory Database - GHSA-6gjf-7w99-j7x7 - CC BY 4.0
Vulnerability history: october/october
All published vulnerabilities of this package (Composer package), newest first. Shows whether this is a one-off slip or a package that needs watching.
- Total entries
- 13
- First → latest
- 06.2020 09.2026
- Without a fix
- 3
- Exploited in attacks
- 0
Severity breakdown
- Critical 1
- High 4
- Medium 5
- Low 3
Disclosures per year
- 2020: 1
- 2021: 1
- 2022: 5
- 2023: 1
- 2024: 2
- 2025: 1
- 2026: 2
-
Deleted Admin Can Sign In to Admin Interface this entry
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