CVE-2026-54840 - Vulnerability Details - OpenCVE

Description

Unauthenticated Broken Access Control in Newsletters <= 4.13 versions.

Published: 2026-06-26

Score: 7.3 High

EPSS: n/a

KEV: No

Impact:

Action:

Analysis

Analysis and contextual insights are available on OpenCVE Cloud.

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions

Tribulant Software

Newsletters

unaffected

Version	Status	Constraints
`n/a`	affected	≤ 4.13

No data.

No data.

No data available yet.

Remediation

Vendor Solution

Update the WordPress Newsletters Plugin to the latest available version (at least 4.14).

Tracking

Sign in to view the affected projects.

Advisories

No advisories yet.

No CVSS v4.0

Attack Vector Network

Attack Complexity Low

Privileges Required None

Scope Unchanged

Confidentiality Impact Low

Integrity Impact Low

Availability Impact Low

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

No EPSS score available.

Exploitation none

Automatable yes

Technical Impact partial

References

Link	Providers
https://patchstack.com/database/wordpress/plugin/newsletters-lite/vulnerability/wordpress-newsletters-plugin-4-13-broken-access-control-vulnerability?_s_id=cve

History

Fri, 26 Jun 2026 18:30:00 +0000

Type	Values Removed	Values Added
Metrics		ssvc `{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}`

Fri, 26 Jun 2026 15:15:00 +0000

Type	Values Removed	Values Added
Description		Unauthenticated Broken Access Control in Newsletters <= 4.13 versions.
Title		WordPress Newsletters plugin <= 4.13 - Broken Access Control vulnerability
Weaknesses		CWE-862
References		https://patchstack.com/database/wordpress/plugin/newsletters-lite/vulnerability/wordpress-newsletters-plugin-4-13-broken-access-control-vulnerability?_s_id=cve
Metrics		cvssV3_1 `{'score': 7.3, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L'}`

Subscriptions

No data.

MITRE

Status: PUBLISHED

Assigner: Patchstack

Published: 2026-06-26T14:52:27.015Z

Updated: 2026-06-26T17:43:51.460Z

Reserved: 2026-06-16T09:21:57.269Z

Link: CVE-2026-54840

Vulnrichment

Updated: 2026-06-26T17:35:19.088Z

NVD

No data.

Redhat

No data.

OpenCVE Enrichment

Updated: 2026-06-26T17:00:04Z

Weaknesses

CWE-862

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-54840", "assignerOrgId": "21595511-bba5-4825-b968-b78d1f9984a3", "state": "PUBLISHED", "assignerShortName": "Patchstack", "dateReserved": "2026-06-16T09:21:57.269Z", "datePublished": "2026-06-26T14:52:27.015Z", "dateUpdated": "2026-06-26T17:43:51.460Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "21595511-bba5-4825-b968-b78d1f9984a3", "shortName": "Patchstack", "dateUpdated": "2026-06-26T14:52:27.015Z"}, "title": "WordPress Newsletters plugin <= 4.13 - Broken Access Control vulnerability", "problemTypes": [{"descriptions": [{"lang": "en", "cweId": "CWE-862", "description": "CWE-862 Missing Authorization", "type": "CWE"}]}], "impacts": [{"capecId": "CAPEC-180", "descriptions": [{"lang": "en", "value": "CAPEC-180 Exploiting Incorrectly Configured Access Control Security Levels"}]}], "affected": [{"vendor": "Tribulant Software", "collectionURL": "https://wordpress.org/plugins", "defaultStatus": "unaffected", "packageName": "newsletters-lite", "product": "Newsletters", "versions": [{"lessThanOrEqual": "4.13", "status": "affected", "version": "n/a", "versionType": "custom", "changes": [{"at": "4.14", "status": "unaffected"}]}]}], "descriptions": [{"lang": "en", "supportingMedia": [{"base64": false, "type": "text/html", "value": "Unauthenticated Broken Access Control in Newsletters <= 4.13 versions."}], "value": "Unauthenticated Broken Access Control in Newsletters <= 4.13 versions."}], "references": [{"tags": ["vdb-entry"], "url": "https://patchstack.com/database/wordpress/plugin/newsletters-lite/vulnerability/wordpress-newsletters-plugin-4-13-broken-access-control-vulnerability?_s_id=cve"}], "metrics": [{"format": "CVSS", "scenarios": [{"lang": "en", "value": "GENERAL"}], "cvssV3_1": {"attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "NONE", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "LOW", "integrityImpact": "LOW", "availabilityImpact": "LOW", "version": "3.1", "baseSeverity": "HIGH", "baseScore": 7.3, "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L"}}], "solutions": [{"lang": "en", "supportingMedia": [{"base64": false, "type": "text/html", "value": "Update the WordPress Newsletters Plugin to the latest available version (at least 4.14)."}], "value": "Update the WordPress Newsletters Plugin to the latest available version (at least 4.14)."}], "credits": [{"lang": "en", "type": "finder", "user": "00000000-0000-4000-9000-000000000000", "value": "HieuPenguinnn | Patchstack Bug Bounty Program"}], "source": {"discovery": "EXTERNAL"}, "x_generator": {"engine": "Vulnogram 0.2.0"}}, "adp": [{"metrics": [{"other": {"type": "ssvc", "content": {"timestamp": "2026-06-26T17:35:17.953100Z", "id": "CVE-2026-54840", "options": [{"Exploitation": "none"}, {"Automatable": "yes"}, {"Technical Impact": "partial"}], "role": "CISA Coordinator", "version": "2.0.3"}}}], "title": "CISA ADP Vulnrichment", "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-06-26T17:43:51.460Z"}}]}}

{"dataType": "CVE_RECORD", "containers": {"adp": [{"title": "CISA ADP Vulnrichment", "metrics": [{"other": {"type": "ssvc", "content": {"id": "CVE-2026-54840", "role": "CISA Coordinator", "options": [{"Exploitation": "none"}, {"Automatable": "yes"}, {"Technical Impact": "partial"}], "version": "2.0.3", "timestamp": "2026-06-26T17:35:17.953100Z"}}}], "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-06-26T17:35:19.088Z"}}], "cna": {"title": "WordPress Newsletters plugin <= 4.13 - Broken Access Control vulnerability", "source": {"discovery": "EXTERNAL"}, "credits": [{"lang": "en", "type": "finder", "user": "00000000-0000-4000-9000-000000000000", "value": "HieuPenguinnn | Patchstack Bug Bounty Program"}], "impacts": [{"capecId": "CAPEC-180", "descriptions": [{"lang": "en", "value": "CAPEC-180 Exploiting Incorrectly Configured Access Control Security Levels"}]}], "metrics": [{"format": "CVSS", "cvssV3_1": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 7.3, "attackVector": "NETWORK", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L", "integrityImpact": "LOW", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "LOW", "privilegesRequired": "NONE", "confidentialityImpact": "LOW"}, "scenarios": [{"lang": "en", "value": "GENERAL"}]}], "affected": [{"vendor": "Tribulant Software", "product": "Newsletters", "versions": [{"status": "affected", "changes": [{"at": "4.14", "status": "unaffected"}], "version": "n/a", "versionType": "custom", "lessThanOrEqual": "4.13"}], "packageName": "newsletters-lite", "collectionURL": "https://wordpress.org/plugins", "defaultStatus": "unaffected"}], "solutions": [{"lang": "en", "value": "Update the WordPress Newsletters Plugin to the latest available version (at least 4.14).", "supportingMedia": [{"type": "text/html", "value": "Update the WordPress Newsletters Plugin to the latest available version (at least 4.14).", "base64": false}]}], "references": [{"url": "https://patchstack.com/database/wordpress/plugin/newsletters-lite/vulnerability/wordpress-newsletters-plugin-4-13-broken-access-control-vulnerability?_s_id=cve", "tags": ["vdb-entry"]}], "x_generator": {"engine": "Vulnogram 0.2.0"}, "descriptions": [{"lang": "en", "value": "Unauthenticated Broken Access Control in Newsletters <= 4.13 versions.", "supportingMedia": [{"type": "text/html", "value": "Unauthenticated Broken Access Control in Newsletters <= 4.13 versions.", "base64": false}]}], "problemTypes": [{"descriptions": [{"lang": "en", "type": "CWE", "cweId": "CWE-862", "description": "CWE-862 Missing Authorization"}]}], "providerMetadata": {"orgId": "21595511-bba5-4825-b968-b78d1f9984a3", "shortName": "Patchstack", "dateUpdated": "2026-06-26T14:52:27.015Z"}}}, "cveMetadata": {"cveId": "CVE-2026-54840", "state": "PUBLISHED", "dateUpdated": "2026-06-26T17:43:51.460Z", "dateReserved": "2026-06-16T09:21:57.269Z", "assignerOrgId": "21595511-bba5-4825-b968-b78d1f9984a3", "datePublished": "2026-06-26T14:52:27.015Z", "assignerShortName": "Patchstack"}, "dataVersion": "5.2"}