CVE-2026-16268 | BDVDB-2026-355779 Detail

Newsletters

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.

Impact#

Per CVSS v3.1: confidentiality impact low, integrity impact high, availability impact none. Attack vector: network.

Weaknesses#

CWE-918 Server-Side Request Forgery (SSRF)

References#

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

Exploit#

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

History#

Version 12026-08-06Record published in the CVE List.

Published

Published: 2026-08-06
Last modified: 2026-08-06

Vendor information

Vendor: Not stated
Product: Newsletters

Score

8.2 High

EPSS

less than 1%, Very Low

Estimated chance of exploitation in the next 30 days. EPSS percentile: 54.6.

KEV

Not listed in the CISA Known Exploited Vulnerabilities catalog.

Impact

Server-Side Request Forgery

Action

No specific action is recorded in the source data. Check the references for vendor guidance.

Affected Systems

Vulnerable
< 4.16
Fixed
4.16

Scoring System

CVSS v4.0

Not available

CVSS v3.1

8.2 High

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:H/A:N

Metric breakdown
Attack Vector	Network
Attack Complexity	Low
Privileges Required	None
User Interaction	None
Scope	Unchanged
Confidentiality	Low
Integrity	High
Availability	None

CVSS v3.0

Not available

CVSS v2

Not available

Source: CVE List v5 (record); CISA KEV (kev, action); FIRST EPSS (epss).