CVE-2026-34096
Guardian Language-System XSS via name Parameter in designer.php
Description
Guardian language-system fails to sanitize the name GET parameter before outputting it into an HTML input value attribute in designer.php (line 57). An authenticated attacker can craft a URL containing script tags that execute in the victim's browser session.
INFO
Published Date :
July 1, 2026, 5:16 p.m.
Last Modified :
Oct. 25, 2026, 5:10 p.m.
Remotely Exploit :
Yes !
Source :
[email protected]
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS | 134c704f-9b21-4f2e-91b3-4a467353bcc0 | |||||
| CVSS 3.1 | MEDIUM | 83251b91-4cc7-4094-a5c7-464a1b83ea10 | ||||
| CVSS 3.1 | MEDIUM | [email protected] | ||||
| CVSS 4.0 | MEDIUM | 83251b91-4cc7-4094-a5c7-464a1b83ea10 | ||||
| CVSS 4.0 | MEDIUM | [email protected] |
Solution
- Sanitize the 'name' GET parameter.
- Validate input before outputting into HTML.
- Update the affected application code.
- Implement output encoding on user-supplied data.
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-2026-34096.
| URL | Resource |
|---|---|
| https://gist.github.com/cyberinforepo/d5b2771d82e1b31b8fc1c33052e08dad | |
| https://www.vulncheck.com/advisories/guardian-language-system-xss-via-designer-php-name-parameter |
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-34096 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-2026-34096
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-2026-34096 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-34096 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.
-
CVE Translated by [email protected]
Oct. 25, 2026
Action Type Old Value New Value Added Translation Title: language-system de guardian, Description: El sistema de lenguaje Guardian no logra sanear el parámetro GET name antes de emitirlo en un atributo value de un input HTML en designer.php (línea 57). Un atacante autenticado puede elaborar una URL que contenga etiquetas de script que se ejecutan en la sesión del navegador de la víctima. -
CVE Modified by [email protected]
Jul. 14, 2026
Action Type Old Value New Value Changed Affected [{'repo': 'https://github.com/guardian/language-system', 'vendor': 'guardian', 'product': 'language-system', 'versions': [{'status': 'affected', 'version': '0', 'versionType': 'git', 'lessThanOrEqual': 'e42c395ec4b03fe62973a669c9209a673838b8a4'}], 'defaultStatus': 'affected'}] [{'repo': 'https://github.com/guardian/language-system', 'vendor': 'guardian', 'product': 'language-system', 'versions': [{'status': 'affected', 'version': '0', 'versionType': 'git', 'lessThanOrEqual': 'e42c395ec4b03fe62973a669c9209a673838b8a4'}], 'packageURL': 'pkg:github/guardian/language-system', 'defaultStatus': 'affected'}] -
CVE Modified by 134c704f-9b21-4f2e-91b3-4a467353bcc0
Jul. 01, 2026
Action Type Old Value New Value Added SSVC {'id': 'CVE-2026-34096', 'role': 'CISA Coordinator', 'options': [{'exploitation': 'poc'}, {'automatable': 'no'}, {'technicalImpact': 'partial'}], 'version': '2.0.3', 'timestamp': '2026-07-01T17:52:43.044375Z'} -
New CVE Received by [email protected]
Jul. 01, 2026
Action Type Old Value New Value Added Affected [{'repo': 'https://github.com/guardian/language-system', 'vendor': 'guardian', 'product': 'language-system', 'versions': [{'status': 'affected', 'version': '0', 'versionType': 'git', 'lessThanOrEqual': 'e42c395ec4b03fe62973a669c9209a673838b8a4'}], 'defaultStatus': 'affected'}] Added Description Guardian language-system fails to sanitize the name GET parameter before outputting it into an HTML input value attribute in designer.php (line 57). An authenticated attacker can craft a URL containing script tags that execute in the victim's browser session. Added CVSS V4.0 AV:N/AC:L/AT:N/PR:L/UI:A/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X Added CVSS V3.1 AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:L/A:N Added CWE CWE-79 Added Reference https://gist.github.com/cyberinforepo/d5b2771d82e1b31b8fc1c33052e08dad Added Reference https://www.vulncheck.com/advisories/guardian-language-system-xss-via-designer-php-name-parameter