CVE-2026-0516
SonicOS Improper Neutralization of HTTP Headers Cross-Site Scripting Vulnerability
Description
A improper neutralization of HTTP Headers for Scripting Syntax vulnerability in SonicOS could allow a remote attacker to manipulate the Host header and redirect firewall management users to arbitrary web domains.
INFO
Published Date :
Aug. 5, 2026, 1:20 p.m.
Last Modified :
Aug. 5, 2026, 1:20 p.m.
Remotely Exploit :
No
Source :
[email protected]
Solution
- Update SonicOS to the latest vendor-provided version.
- Apply vendor patches for the described vulnerability.
- Validate Host header processing logic.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2026-0516.
| URL | Resource |
|---|---|
| https://psirt.global.sonicwall.com/vuln-detail/SNWLID-2026-0009 |
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-0516 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2026-0516
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-0516 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-0516 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
New CVE Received by [email protected]
Aug. 05, 2026
Action Type Old Value New Value Added Affected [{'vendor': 'SonicWall', 'product': 'SonicOS', 'versions': [{'status': 'affected', 'version': '6.5.5.1-6n and older versions'}, {'status': 'affected', 'version': '7.0.1-5169 and older versions'}, {'status': 'affected', 'version': '7.3.3-7015 and older versions'}, {'status': 'affected', 'version': '8.2.1-8010 and older versions'}], 'platforms': ['Linux'], 'defaultStatus': 'unknown'}] Added Description A improper neutralization of HTTP Headers for Scripting Syntax vulnerability in SonicOS could allow a remote attacker to manipulate the Host header and redirect firewall management users to arbitrary web domains. Added CWE CWE-644 Added Reference https://psirt.global.sonicwall.com/vuln-detail/SNWLID-2026-0009