Answer in brief
CVE-2026-83555 records a Medium severity (CVSS 5.3) vulnerability in Email Subscribers by Icegram Express < 5.9.35 - Unauthenticated Subscription Status Change via Missing Token Verification. The current sources do not mark it as known exploited. The current feed maps Unknown/Email Subscribers & Newsletters (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 5.3. 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/Email Subscribers & Newsletters (generic). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| Unknown/Email Subscribers & Newslettersgeneric | >=0 <5.9.35 | 5.9.35 |
Published upstream
Sep 23, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Sep 23, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Sep 23, 2026
The Email Subscribers & Newsletters WordPress plugin before 5.9.35 does not verify the per-subscriber management token before changing a subscriber's subscription status, allowing unauthenticated users to force-unsubscribe or force-confirm an arbitrary subscriber whose email address they know.
Quoted source text, attributed separately from HOL analysis.