CVE-2026-16268 - Vulnerability Details - OpenCVE

The Newsletters WordPress plugin before 4.16 does not authenticate or validate a bounce-processing request before fetching a user-supplied URL on the server side, allowing unauthenticated attackers to make the site issue requests to arbitrary internal or external hosts.

No CVSS v4.0

No CVSS v3.1

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

The EPSS score is 0.00136.

Key SSVC decision points have not yet been added.

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

Vendor Product Default status Versions

Unknown

Newsletters

unaffected

Version	Status	Constraints
`0`	affected	< 4.16

No data.

No data.

OpenCVE Enrichment is a feature of OpenCVE that uses AI to automatically link vendors and products to CVEs. Learn more on GitHub.

No data.

Project Subscriptions

No data.

Advisories

No advisories yet.

Fixes

Solution

No solution given by the vendor.

Workaround

No workaround given by the vendor.

References

Link	Providers
https://wpscan.com/vulnerability/65612dd4-83d8-40c5-8e12-862e9b5f940b/

History

Thu, 06 Aug 2026 06:30:00 +0000

Type	Values Removed	Values Added
Description		The Newsletters WordPress plugin before 4.16 does not authenticate or validate a bounce-processing request before fetching a user-supplied URL on the server side, allowing unauthenticated attackers to make the site issue requests to arbitrary internal or external hosts.
Title		Newsletters < 4.16 - Unauthenticated Server-Side Request Forgery via SNS Bounce Handler
References		https://wpscan.com/vulnerability/65612dd4-83d8-40c5-8e12-862e9b5f940b/

Projects

Sign in to view the affected projects.

MITRE

Status: PUBLISHED

Assigner: WPScan

Published: 2026-08-06T06:00:09.742Z

Updated: 2026-08-06T14:08:39.333Z

Reserved: 2026-07-20T09:09:39.417Z

Link: CVE-2026-16268

Vulnrichment

No data.

NVD

No data.

Redhat

No data.

OpenCVE Enrichment

Updated: 2026-08-06T08:30:17Z

Weaknesses

No weakness.

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-16268", "assignerOrgId": "1bfdd5d7-9bf6-4a53-96ea-42e2716d7a81", "state": "PUBLISHED", "assignerShortName": "WPScan", "dateReserved": "2026-07-20T09:09:39.417Z", "datePublished": "2026-08-06T06:00:09.742Z", "dateUpdated": "2026-08-06T14:08:39.333Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "1bfdd5d7-9bf6-4a53-96ea-42e2716d7a81", "shortName": "WPScan", "dateUpdated": "2026-08-06T06:00:09.742Z"}, "title": "Newsletters < 4.16 - Unauthenticated Server-Side Request Forgery via SNS Bounce Handler", "problemTypes": [{"descriptions": [{"description": "CWE-918 Server-Side Request Forgery (SSRF)", "lang": "en", "type": "CWE"}]}], "affected": [{"vendor": "Unknown", "product": "Newsletters", "versions": [{"status": "affected", "versionType": "semver", "version": "0", "lessThan": "4.16"}], "defaultStatus": "unaffected"}], "descriptions": [{"lang": "en", "value": "The Newsletters WordPress plugin before 4.16 does not authenticate or validate a bounce-processing request before fetching a user-supplied URL on the server side, allowing unauthenticated attackers to make the site issue requests to arbitrary internal or external hosts."}], "references": [{"url": "https://wpscan.com/vulnerability/65612dd4-83d8-40c5-8e12-862e9b5f940b/", "tags": ["exploit", "vdb-entry", "technical-description"]}], "credits": [{"lang": "en", "value": "Yaswanth Reddy Sunkara", "type": "finder"}, {"lang": "en", "value": "WPScan", "type": "coordinator"}], "source": {"discovery": "EXTERNAL"}, "x_generator": {"engine": "WPScan CVE Generator"}}, "adp": [{"problemTypes": [{"descriptions": [{"type": "CWE", "cweId": "CWE-918", "lang": "en", "description": "CWE-918 Server-Side Request Forgery (SSRF)"}]}], "metrics": [{"cvssV3_1": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 8.2, "attackVector": "NETWORK", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:H/A:N", "integrityImpact": "HIGH", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "NONE", "privilegesRequired": "NONE", "confidentialityImpact": "LOW"}}, {"other": {"type": "ssvc", "content": {"timestamp": "2026-08-06T14:08:16.293996Z", "id": "CVE-2026-16268", "options": [{"Exploitation": "poc"}, {"Automatable": "no"}, {"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": "2026-08-06T14:08:39.333Z"}}]}}