CVE-2023-1844 (GCVE-0-2023-1844)
Vulnerability from cvelistv5 – Published: 2023-06-28 02:34 – Updated: 2026-04-08 17:20
VLAI
EPSS
VEX
Title
Subscribe2 <= 10.40 - Missing Authorization
Summary
The Subscribe2 plugin for WordPress is vulnerable to unauthorized access to email functionality due to a missing capability check when sending test emails in versions up to, and including, 10.40. This makes it possible for author-level attackers to send emails with arbitrary content and attachments to site users.
Severity
4.3 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2024-11-06 18:51 UTC
CWE
- CWE-862 - Missing Authorization
Assigner
References
Impacted products
1 product
| Vendor | Product | Version | CPE status | |
|---|---|---|---|---|
| wedevs | Subscribe2 – Form, Email Subscribers & Newsletters |
Affected:
0 , ≤ 10.40
(semver)
|
guessed |
{
"containers": {
"adp": [
{
"providerMetadata": {
"dateUpdated": "2024-08-02T06:05:26.698Z",
"orgId": "af854a3a-2127-422b-91ae-364da2661108",
"shortName": "CVE"
},
"references": [
{
"tags": [
"x_transferred"
],
"url": "https://www.wordfence.com/threat-intel/vulnerabilities/id/c34ce601-5cf9-433f-bc9d-5c705eba6b08?source=cve"
},
{
"tags": [
"x_transferred"
],
"url": "https://plugins.trac.wordpress.org/browser/subscribe2/trunk/admin/send-email.php#L12"
},
{
"tags": [
"x_transferred"
],
"url": "https://plugins.trac.wordpress.org/changeset/2930676"
}
],
"title": "CVE Program Container"
},
{
"metrics": [
{
"other": {
"content": {
"id": "CVE-2023-1844",
"options": [
{
"Exploitation": "none"
},
{
"Automatable": "no"
},
{
"Technical Impact": "partial"
}
],
"role": "CISA Coordinator",
"timestamp": "2024-11-06T18:51:30.746602Z",
"version": "2.0.3"
},
"type": "ssvc"
}
}
],
"providerMetadata": {
"dateUpdated": "2024-11-06T18:51:40.478Z",
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP"
},
"title": "CISA ADP Vulnrichment"
}
],
"cna": {
"affected": [
{
"defaultStatus": "unaffected",
"product": "Subscribe2 \u2013 Form, Email Subscribers \u0026 Newsletters",
"vendor": "wedevs",
"versions": [
{
"lessThanOrEqual": "10.40",
"status": "affected",
"version": "0",
"versionType": "semver"
}
]
}
],
"credits": [
{
"lang": "en",
"type": "finder",
"value": "Marco Wotschka"
}
],
"descriptions": [
{
"lang": "en",
"value": "The Subscribe2 plugin for WordPress is vulnerable to unauthorized access to email functionality due to a missing capability check when sending test emails in versions up to, and including, 10.40. This makes it possible for author-level attackers to send emails with arbitrary content and attachments to site users."
}
],
"metrics": [
{
"cvssV3_1": {
"baseScore": 4.3,
"baseSeverity": "MEDIUM",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N",
"version": "3.1"
}
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-862",
"description": "CWE-862 Missing Authorization",
"lang": "en",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-04-08T17:20:23.116Z",
"orgId": "b15e7b5b-3da4-40ae-a43c-f7aa60e62599",
"shortName": "Wordfence"
},
"references": [
{
"url": "https://www.wordfence.com/threat-intel/vulnerabilities/id/c34ce601-5cf9-433f-bc9d-5c705eba6b08?source=cve"
},
{
"url": "https://plugins.trac.wordpress.org/browser/subscribe2/trunk/admin/send-email.php#L12"
},
{
"url": "https://plugins.trac.wordpress.org/changeset/2930676"
}
],
"timeline": [
{
"lang": "en",
"time": "2023-04-04T00:00:00.000Z",
"value": "Discovered"
},
{
"lang": "en",
"time": "2023-06-26T00:00:00.000Z",
"value": "Disclosed"
}
],
"title": "Subscribe2 \u003c= 10.40 - Missing Authorization"
}
},
"cveMetadata": {
"assignerOrgId": "b15e7b5b-3da4-40ae-a43c-f7aa60e62599",
"assignerShortName": "Wordfence",
"cveId": "CVE-2023-1844",
"datePublished": "2023-06-28T02:34:23.370Z",
"dateReserved": "2023-04-04T21:01:11.671Z",
"dateUpdated": "2026-04-08T17:20:23.116Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2",
"vulnerability-lookup:meta": {
"epss": {
"cve": "CVE-2023-1844",
"date": "2026-10-16",
"epss": "0.00503",
"percentile": "0.41698"
},
"nvd": {
"cve": {
"affected": [
{
"affectedData": [
{
"defaultStatus": "unaffected",
"product": "Subscribe2 \u2013 Form, Email Subscribers \u0026 Newsletters",
"vendor": "wedevs",
"versions": [
{
"lessThanOrEqual": "10.40",
"status": "affected",
"version": "0",
"versionType": "semver"
}
]
}
],
"source": "security@wordfence.com"
}
],
"configurations": [
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:a:subscribe2_project:subscribe2:*:*:*:*:*:wordpress:*:*",
"matchCriteriaId": "34325F77-97FF-4F8E-AA88-30E2B687950B",
"versionEndIncluding": "10.40",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
}
]
}
],
"cveTags": [],
"descriptions": [
{
"lang": "en",
"value": "The Subscribe2 plugin for WordPress is vulnerable to unauthorized access to email functionality due to a missing capability check when sending test emails in versions up to, and including, 10.40. This makes it possible for author-level attackers to send emails with arbitrary content and attachments to site users."
},
{
"lang": "es",
"value": "El plugin Subscribe2 para WordPress es vulnerable al acceso no autorizado a la funcionalidad de correo electr\u00f3nico debido a la falta de una comprobaci\u00f3n de capacidad al enviar correos electr\u00f3nicos de prueba en versiones hasta la 10.40 inclusive. Esto se hace posible que los atacantes a nivel de autor env\u00eden correos electr\u00f3nicos con contenido arbitrario y archivos adjuntos a los usuarios del sitio. "
}
],
"id": "CVE-2023-1844",
"lastModified": "2026-06-17T05:28:52.460",
"metrics": {
"cvssMetricV31": [
{
"cvssData": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "NONE",
"baseScore": 4.3,
"baseSeverity": "MEDIUM",
"confidentialityImpact": "NONE",
"integrityImpact": "LOW",
"privilegesRequired": "LOW",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N",
"version": "3.1"
},
"exploitabilityScore": 2.8,
"impactScore": 1.4,
"source": "security@wordfence.com",
"type": "Secondary"
}
],
"ssvcV203": [
{
"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"ssvcData": {
"id": "CVE-2023-1844",
"options": [
{
"exploitation": "none"
},
{
"automatable": "no"
},
{
"technicalImpact": "partial"
}
],
"role": "CISA Coordinator",
"timestamp": "2024-11-06T18:51:30.746602Z",
"version": "2.0.3"
}
}
]
},
"published": "2023-06-28T03:15:09.140",
"references": [
{
"source": "security@wordfence.com",
"tags": [
"Patch"
],
"url": "https://plugins.trac.wordpress.org/browser/subscribe2/trunk/admin/send-email.php#L12"
},
{
"source": "security@wordfence.com",
"tags": [
"Patch"
],
"url": "https://plugins.trac.wordpress.org/changeset/2930676"
},
{
"source": "security@wordfence.com",
"tags": [
"Third Party Advisory"
],
"url": "https://www.wordfence.com/threat-intel/vulnerabilities/id/c34ce601-5cf9-433f-bc9d-5c705eba6b08?source=cve"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"tags": [
"Patch"
],
"url": "https://plugins.trac.wordpress.org/browser/subscribe2/trunk/admin/send-email.php#L12"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"tags": [
"Patch"
],
"url": "https://plugins.trac.wordpress.org/changeset/2930676"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"tags": [
"Third Party Advisory"
],
"url": "https://www.wordfence.com/threat-intel/vulnerabilities/id/c34ce601-5cf9-433f-bc9d-5c705eba6b08?source=cve"
}
],
"sourceIdentifier": "security@wordfence.com",
"vulnStatus": "Modified",
"weaknesses": [
{
"description": [
{
"lang": "en",
"value": "CWE-862"
}
],
"source": "security@wordfence.com",
"type": "Secondary"
}
]
}
},
"redhat_vex": {
"current_release_date": "2026-04-08T19:37:11+00:00",
"cve": "CVE-2023-1844",
"id": "CVE-2023-1844",
"initial_release_date": "2023-01-01T00:00:00+00:00",
"product_status:known_not_affected": "1",
"source": "Red Hat CSAF VEX",
"status": "final",
"title": "Subscribe2 \u003c= 10.40 - Missing Authorization",
"url": "https://security.access.redhat.com/data/csaf/v2/vex/2023/cve-2023-1844.json",
"version": "3"
},
"vulnrichment": {
"containers": {
"adp": [
{
"providerMetadata": {
"dateUpdated": "2024-08-02T06:05:26.698Z",
"orgId": "af854a3a-2127-422b-91ae-364da2661108",
"shortName": "CVE"
},
"references": [
{
"tags": [
"x_transferred"
],
"url": "https://www.wordfence.com/threat-intel/vulnerabilities/id/c34ce601-5cf9-433f-bc9d-5c705eba6b08?source=cve"
},
{
"tags": [
"x_transferred"
],
"url": "https://plugins.trac.wordpress.org/browser/subscribe2/trunk/admin/send-email.php#L12"
},
{
"tags": [
"x_transferred"
],
"url": "https://plugins.trac.wordpress.org/changeset/2930676"
}
],
"title": "CVE Program Container"
},
{
"metrics": [
{
"other": {
"content": {
"id": "CVE-2023-1844",
"options": [
{
"Exploitation": "none"
},
{
"Automatable": "no"
},
{
"Technical Impact": "partial"
}
],
"role": "CISA Coordinator",
"timestamp": "2024-11-06T18:51:30.746602Z",
"version": "2.0.3"
},
"type": "ssvc"
}
}
],
"providerMetadata": {
"dateUpdated": "2024-11-06T18:51:35.825Z",
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP"
},
"title": "CISA ADP Vulnrichment"
}
],
"cna": {
"affected": [
{
"defaultStatus": "unaffected",
"product": "Subscribe2 \u2013 Form, Email Subscribers \u0026 Newsletters",
"vendor": "wedevs",
"versions": [
{
"lessThanOrEqual": "10.40",
"status": "affected",
"version": "0",
"versionType": "semver"
}
]
}
],
"credits": [
{
"lang": "en",
"type": "finder",
"value": "Marco Wotschka"
}
],
"descriptions": [
{
"lang": "en",
"value": "The Subscribe2 plugin for WordPress is vulnerable to unauthorized access to email functionality due to a missing capability check when sending test emails in versions up to, and including, 10.40. This makes it possible for author-level attackers to send emails with arbitrary content and attachments to site users."
}
],
"metrics": [
{
"cvssV3_1": {
"baseScore": 4.3,
"baseSeverity": "MEDIUM",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N",
"version": "3.1"
}
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-862",
"description": "CWE-862 Missing Authorization",
"lang": "en",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-04-08T17:20:23.116Z",
"orgId": "b15e7b5b-3da4-40ae-a43c-f7aa60e62599",
"shortName": "Wordfence"
},
"references": [
{
"url": "https://www.wordfence.com/threat-intel/vulnerabilities/id/c34ce601-5cf9-433f-bc9d-5c705eba6b08?source=cve"
},
{
"url": "https://plugins.trac.wordpress.org/browser/subscribe2/trunk/admin/send-email.php#L12"
},
{
"url": "https://plugins.trac.wordpress.org/changeset/2930676"
}
],
"timeline": [
{
"lang": "en",
"time": "2023-04-04T00:00:00.000Z",
"value": "Discovered"
},
{
"lang": "en",
"time": "2023-06-26T00:00:00.000Z",
"value": "Disclosed"
}
],
"title": "Subscribe2 \u003c= 10.40 - Missing Authorization"
}
},
"cveMetadata": {
"assignerOrgId": "b15e7b5b-3da4-40ae-a43c-f7aa60e62599",
"assignerShortName": "Wordfence",
"cveId": "CVE-2023-1844",
"datePublished": "2023-06-28T02:34:23.370Z",
"dateReserved": "2023-04-04T21:01:11.671Z",
"dateUpdated": "2026-04-08T17:20:23.116Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
}
}
Loading…
Loading…
Drag nodes to arrange them. Double-click a related vulnerability to open it, or a source to visit its link. The Physics button on the left tunes the layout and the simulation; the legend at the bottom left hides or shows nodes by kind and by sighting type.
Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
Vulnerability timeline
Sightings and recorded dates, grouped by day · UTC
Loading timeline…
Loading…
Loading…
The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the
vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base
model, served locally by ML-Gateway.
They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
Loading…
Related by attack behaviour
Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.