Answer in brief
CVE-2026-121998 records a Unknown severity vulnerability in iChart < 2.2.4 - Subscriber+ Arbitrary Post Read, Update and Deletion via IDOR. The current sources do not mark it as known exploited. The current feed maps Unknown/iChart (generic). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
A CVSS score is not reported in the current record. 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 Unknown/iChart (generic). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| Unknown/iChartgeneric | >=0 <2.2.4 | 2.2.4 |
Published upstream
Nov 11, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Nov 11, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Nov 11, 2026
The iChart WordPress plugin before 2.2.4 does not perform capability or ownership checks in several of its AJAX actions, relying only on a nonce that any logged-in user can obtain, allowing users with a role as low as Subscriber to read, modify and permanently delete arbitrary posts and to overwrite a site-wide option.
Quoted source text, attributed separately from HOL analysis.