Email Subscribers by Icegram Express < 5.9.35 - Unauthenticated Subscription Status Change via Missing Token Verification (CVE-2026-83555) | HOL Guard CVE

Unknown severity · Source severity not reportedCVE-2026-83555

Email Subscribers by Icegram Express < 5.9.35 - Unauthenticated Subscription Status Change via Missing Token Verification

Answer in brief

CVE-2026-83555 records a Unknown severity 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.

Published Sep 23, 2026Updated Sep 23, 2026Source checked Sep 23, 2026First seen by HOL Sep 23, 2026Material review Sep 23, 2026

Upstream Advisory

Key facts

Risk: Unknown severitySource severity not reported
Exploitation: Not marked as known exploited
Affected software: 1 mapped package or product
Fix availability: Available

Why this deserves its current priority

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.

Affected scope and exposure questions

The current feed maps Unknown/Email Subscribers & Newsletters (generic). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
Package	Affected range	Fixed version
Unknown/Email Subscribers & Newslettersgeneric	>=0 <5.9.35	5.9.35

Recommended response

Check inventory. Check lockfiles and deployed manifests for Unknown/Email Subscribers & Newsletters.
Review the reported fix. Update Unknown/Email Subscribers & Newsletters to 5.9.35 if you use the affected versions. Test the change in a non-production environment first.

Evidence timeline and material changes

Published upstream
Sep 23, 2026
Evidence: source:cvelist:source_dates:source-dates:record
Source modified
Sep 23, 2026
Evidence: source:cvelist:source_dates:source-dates:record
First seen by HOL
Sep 23, 2026

Sources and claim methodology

Source referencewpscan.com

Upstream source description

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.