SB2026083122 - Cross-site scripting in Vuejs

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Main Vulnerability Database SB2026083122

SB2026083122 - Cross-site scripting in Vuejs

Published: August 31, 2026

Security Bulletin ID SB2026083122
CSH Severity
Medium
Patch available
YES
Number of vulnerabilities 1
Exploitation vector Remote access
Highest impact Data manipulation

Breakdown by Severity

Medium 100%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 1 vulnerability.


1) Cross-site scripting (CVE-ID: N/A)

CWE-ID: CWE-79 - Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

CVSSv4: 6.9 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N]


The vulnerability allows a remote attacker to inject arbitrary web script in server-rendered HTML.

The vulnerability exists due to cross-site scripting in ssrRenderAttrs() and isSSRSafeAttrName() in @vue/server-renderer when rendering dynamic attribute names from an attacker-controlled object via v-bind. A remote attacker can supply a crafted attribute key containing a carriage return character to inject arbitrary web script in server-rendered HTML.

The issue is specific to server-side rendering and can be triggered without user interaction when the injected attributes include self-triggering event handler combinations such as autofocus with onfocus.


Remediation

Install update from vendor's website.

References