Answer in brief
CVE-2026-88959 records a High severity (CVSS 8.7) vulnerability in Anchor CMS through 0.12.7 Privilege Escalation via Missing Authorization on Admin User-Management Endpoints. The current sources do not mark it as known exploited. The current feed maps anchorcms/Anchor CMS (generic), anchorcms/anchorcms/anchor-cms (generic). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
CVSS is 8.7. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps anchorcms/Anchor CMS (generic), anchorcms/anchorcms/anchor-cms (generic). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| anchorcms/Anchor CMSgeneric | 0 | Not reported |
| anchorcms/anchorcms/anchor-cmsgeneric | >=0 <=0.12.7 | Not reported |
Published upstream
Sep 10, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Sep 24, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Sep 10, 2026
Anchor CMS through 0.12.7 fails to enforce role-based access control in admin user-management endpoints, allowing any authenticated low-privilege user to create administrator accounts or modify existing ones. Attackers with editor or user roles can POST directly to admin/users/add or admin/users/edit endpoints to create new administrator accounts or change the existing administrator's password, gaining full administrative access.
Quoted source text, attributed separately from HOL analysis.