Published:2022/07/25  Last Updated:2022/07/25

JVN#77850327
WordPress Plugin "Newsletter" vulnerable to cross-site scripting

Overview

WordPress Plugin "Newsletter" contains a cross-site scripting vulnerability.

Products Affected

  • Newsletter prior to 7.4.5

Description

WordPress Plugin "Newsletter" provided by Stefano Lissa & The Newsletter Team contains a cross-site scripting vulnerability (CWE-79).

Impact

An arbitrary script may be executed on the web browser of the user who is logging in to the WordPress using the plugin with the administrative privilege.

Solution

Update the plugin
Update the plugin to the latest version according to the information provided by the developer.

Vendor Status

Vendor Link
Stefano Lissa & The Newsletter Team Newsletter – Send awesome emails from WordPress

References

  1. WPScan
    WordPress Plugin Vulnerabilities | Newsletter < 7.4.5 - Reflected Cross-Site Scripting

JPCERT/CC Addendum

Vulnerability Analysis by JPCERT/CC

CVSS v3 CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
Base Score: 6.1
Attack Vector(AV) Physical (P) Local (L) Adjacent (A) Network (N)
Attack Complexity(AC) High (H) Low (L)
Privileges Required(PR) High (H) Low (L) None (N)
User Interaction(UI) Required (R) None (N)
Scope(S) Unchanged (U) Changed (C)
Confidentiality Impact(C) None (N) Low (L) High (H)
Integrity Impact(I) None (N) Low (L) High (H)
Availability Impact(A) None (N) Low (L) High (H)
CVSS v2 AV:N/AC:H/Au:N/C:N/I:P/A:N
Base Score: 2.6
Access Vector(AV) Local (L) Adjacent Network (A) Network (N)
Access Complexity(AC) High (H) Medium (M) Low (L)
Authentication(Au) Multiple (M) Single (S) None (N)
Confidentiality Impact(C) None (N) Partial (P) Complete (C)
Integrity Impact(I) None (N) Partial (P) Complete (C)
Availability Impact(A) None (N) Partial (P) Complete (C)

Credit

Gen Sato of Mitsui Bussan Secure Directions, Inc. reported this vulnerability to IPA.
JPCERT/CC coordinated with the developer under Information Security Early Warning Partnership.

Other Information

JPCERT Alert
JPCERT Reports
CERT Advisory
CPNI Advisory
TRnotes
CVE CVE-2022-1756
JVN iPedia JVNDB-2022-000057