Email Subscribers & Newsletters <= 5.9.10 - Missing Authentication to Unauthenticated Mailing Queue Trigger
Published Nov 19, 2025
5.3
MEDIUMCVSS 3.1
EPSS 0.30%
Description
The Icegram Express - Email Subscribers, Newsletters and Marketing Automation Plugin for WordPress is vulnerable to Authorization in versions up to, and including, 5.9.10. This is due to the plugin not properly verifying that a user is authorized to perform an action in the `trigger_mailing_queue_sending` function. This makes it possible for unauthenticated attackers to force immediate email sending, bypass the schedule, increase server load, and change plugin state (e.g., last-cron-hit), enabling abuse or DoS-like effects.
Affected products
-
- Version 0StatusaffectedConstraints<=5.9.10
- Version
Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
| Vendor | Product | Default status | Versions | ||||||
|---|---|---|---|---|---|---|---|---|---|
| Icegram | n/a | unaffected |
|
No data.
No data.
No Red Hat product state for this CVE.
No package ranges for this CVE.
Remediation
No remediation recorded yet.
Metrics
No CVSS v4.0 score for this CVE.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
No CVSS v3.0 score for this CVE.
No CVSS v2.0 score for this CVE.
This CVE is not in the KEV list.
CISA SSVC (Vulnrichment)
Stakeholder-Specific Vulnerability Categorization from CISA ADP.
Exploitation
NoneAutomatable
NoTechnical Impact
PartialDecision
n/aAssessed Nov 19, 2025 · SSVC 2.0.3
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.
Score over time
2025–2026- EPSS v4
- EPSS v5
Percentile over time
- EPSS v4
- EPSS v5
Table of values (3 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 0.30% (0.00303) | 20.87th | v5 (v2026.06.15) |
| Jun 15, 2026 | 0.26% (0.00261) | 17.19th | v5 (v2026.06.15) |
| Nov 19, 2025 | 0.06% (0.00062) | 15.11th | v4 (v2025.03.14) |
References (4)
- https://plugins.trac.wordpress.org/browser/email-subscribers/tags/5.9.4/lite/includes/classes/class-es-queue.php#L1132
- https://plugins.trac.wordpress.org/browser/email-subscribers/tags/5.9.4/lite/includes/classes/class-es-queue.php#L54
- https://plugins.trac.wordpress.org/changeset?sfp_email=&sfph_mail=&reponame=&new=3394838%40email-subscribers%2Ftrunk&old=3393565%40email-subscribers%2Ftrunk&sfp_email=&sfph_mail=
- https://www.wordfence.com/threat-intel/vulnerabilities/id/0b4cbe21-9f1b-425b-8141-ae075baaf717?source=cve
Change history (0)
No recorded changes yet.