Authenticated privilege escalation via unrestricted user management
Published Sep 10, 2026 · Updated Sep 10, 2026
Improper authorization in Anchor CMS 0.12.7 and earlier allows remote authenticated users to gain administrative access. The admin user-management route collection checks only for a valid session and CSRF token; its add and edit handlers perform no role or capability check and force the stored role to administrator. An editor or user account can therefore create an administrator or reset an existing administrator's password, yielding full control of the blog.
Summary
What happened
Improper authorization in Anchor CMS 0.12.7 and earlier allows remote authenticated users to gain administrative access. The admin user-management route collection checks only for a valid session and CSRF token; its add and edit handlers perform no role or capability check and force the stored role to administrator. An editor or user account can therefore create an administrator or reset an existing administrator's password, yielding full control of the blog.
The record
- CVE
- CVE-2026-88959
- Published
- Sep 10, 2026
- Updated
- Sep 10, 2026
- Vendor
- Anchor CMS
- Product
- Anchor CMS
- Classifications
- T1098
- Attack vector
- network
- Privileges
- authenticated
Timeline
How it unfolded
- Sep 10, 2026CVE publishedPublication date reported by the CVE source.
- Sep 10, 2026Record 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.
- Affected versionversion=0 <=0.12.7
What conditions does exploitation require?
What is affected?
Published CVSS scores
No CVSS assessment is available in this record.
CVSS describes severity. EPSS estimates exploitation probability.
Attacks
What attackers are doing with it
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Weakness, pattern, technique
Public exploit references
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Technologies
Your stack
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Your stack
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