CVE-2025-24599

WordPress Newsletters plugin <= 4.9.9.6 - Reflected Cross Site Scripting (XSS) vulnerability

Published Feb 4, 2025 CVSS 3.1 · 7.1 High EPSS < 1% KEV · Not listed

Description

Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in Tribulant Software Newsletters newsletters-lite allows Reflected XSS.This issue affects Newsletters: from n/a through <= 4.9.9.6.

Analysis

Technical impact

The vulnerability is an improper neutralization of input during web page generation that allows a reflected XSS flaw. This flaw enables an attacker to inject arbitrary JavaScript or HTML into pages rendered by the plugin. The description does not state specific downstream effects; the potential impact, based on the typical behavior of reflected XSS, could include execution of malicious code in a victim’s browser and related compromise of confidentiality, integrity, or availability.

Affected Systems

The affected product is Tribulant Software Newsletters (Newsletters Lite). Versions up to and including 4.9.9.6 are vulnerable; newer releases are not reported as affected.

Risk and Exploitability

The CVSS score of 7.1 indicates a moderate severity. The EPSS score is <1%, suggesting that exploitation is currently rare. The vulnerability is not listed in the CISA KEV catalog. Based on the description, the likely attack vector is a crafted URL or form input that the plugin reflects into the page; no authentication is required, meaning any visitor can potentially trigger the flaw.

Affected Products

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
`0`	affected	≤ 4.9.9.6

No data.

Vendor	Product	Versions
Tribulant	Newsletters	—
Wordpress	Wordpress	—

Remediation

No solution or workaround provided in the CVE record.

OpenCVE Recommended Actions

Update the Newsletters plugin to the latest available version that removes the reflected XSS flaw.
If an immediate update is not possible, configure a web application firewall or input filtering rule to block or sanitize malicious script or HTML elements in query strings and form data processed by the plugin.
Deploy a Content Security Policy that disallows inline scripts and limits script sources to trusted origins to mitigate the impact of any residual exploit.

Generated by OpenCVE AI on May 2, 2026 at 09:19 UTC.

Tracking

Advisories

Source	ID	Title
EUVD	EUVD-2025-3803	Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in Tribulant Newsletters allows Reflected XSS. This issue affects Newsletters: from n/a through 4.9.9.6.

Metrics

No CVSS v4.0

Attack Vector Network

Attack Complexity Low

Privileges Required None

Scope Changed

Confidentiality Impact Low

Integrity Impact Low

Availability Impact Low

User Interaction Required

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

Exploit prediction score: < 1% (0.266% probability within 30 days)

Exploitation none

Automatable no

Technical Impact partial

References

Link	Providers
https://patchstack.com/database/Wordpress/Plugin/newsletters-lite/vulnerability/wordpress-newsletters-plugin-4-9-9-6-reflected-cross-site-scripting-xss-vulnerability?_s_id=cve

History

Apr 23, 2026 3:00 PM Scoring metrics updated View changes

Type	Values Removed	Values Added
Metrics		cvssV3_1 `{'score': 7.1, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:L'}`

Apr 1, 2026 11:45 PM Description updated. References updated. Scoring metrics updated View changes

Type	Values Removed	Values Added
Description	Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in Tribulant Newsletters allows Reflected XSS. This issue affects Newsletters: from n/a through 4.9.9.6.	Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in Tribulant Software Newsletters newsletters-lite allows Reflected XSS.This issue affects Newsletters: from n/a through <= 4.9.9.6.
References	https://patchstack.com/database/wordpress/plugin/newsletters-lite/vulnerability/wordpress-newsletters-plugin-4-9-9-6-reflected-cross-site-scripting-xss-vulnerability?_s_id=cve	https://patchstack.com/database/Wordpress/Plugin/newsletters-lite/vulnerability/wordpress-newsletters-plugin-4-9-9-6-reflected-cross-site-scripting-xss-vulnerability?_s_id=cve
Metrics	cvssV3_1 `{'score': 7.1, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:L'}`

Jul 15, 2025 1:45 PM Scoring metrics updated View changes

Type	Values Removed	Values Added
Metrics	epss `{'score': 0.00035}`	epss `{'score': 0.00045}`

Feb 4, 2025 3:15 PM Scoring metrics updated View changes

Type	Values Removed	Values Added
Metrics		ssvc `{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}`

Feb 4, 2025 2:30 PM Description updated. Title updated. Weaknesses updated. Added references. Scoring metrics updated View changes

Type	Values Removed	Values Added
Description		Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in Tribulant Newsletters allows Reflected XSS. This issue affects Newsletters: from n/a through 4.9.9.6.
Title		WordPress Newsletters plugin <= 4.9.9.6 - Reflected Cross Site Scripting (XSS) vulnerability
Weaknesses		CWE-79
References		https://patchstack.com/database/wordpress/plugin/newsletters-lite/vulnerability/wordpress-newsletters-plugin-4-9-9-6-reflected-cross-site-scripting-xss-vulnerability?_s_id=cve
Metrics		cvssV3_1 `{'score': 7.1, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:L'}`