CVE-2026-117494：Sisense Cloud BI 平臺多重 XSS 漏洞研究

Cross-Site Scripting (XSS) in the processing of SVG images submitted to the /api/v2/ai/sessions API in the format data:image/svg+xml;base64. Script tags embedded in the SVG are processed when the content is rendered in the assistant window, allowing JavaScript to be executed and the displayed content to be altered.

Impact

Affected Products

The following products are affected by CVE-2026-117494 vulnerability. Even if cvefeed.io is aware of the exact versions of the products that are affected, the information is not represented in the table below.

The Common Vulnerability Scoring System is a standardized framework for assessing the severity of vulnerabilities in software and systems. We collect and displays CVSS scores from various sources for each CVE.

Sanitize SVG input to prevent script execution and render content safely.

• Validate and sanitize all SVG image uploads.
• Remove or neutralize embedded script tags.
• Encode or escape content before rendering.
• Update to the latest secure version.

Here, you will find a curated list of external links that provide in-depth information, practical solutions, and valuable tools related to CVE-2026-117494.

While CVE identifies specific instances of vulnerabilities, CWE categorizes the common flaws or weaknesses that can lead to vulnerabilities. CVE-2026-117494 is associated with the following CWEs:

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-2026-117494 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-2026-117494 vulnerability anywhere in the article.

The following table lists the changes that have been made to the CVE-2026-117494 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]

  十月. 27, 2026

  Action	Type	Old Value	New Value
  Added	Description		Cross-Site Scripting (XSS) in the processing of SVG images submitted to the /api/v2/ai/sessions API in the format data:image/svg+xml;base64. Script tags embedded in the SVG are processed when the content is rendered in the assistant window, allowing JavaScript to be executed and the displayed content to be altered.
  Added	CVSS V4.0		AV:N/AC:L/AT:N/PR:L/UI:A/VC:H/VI:L/VA:L/SC:H/SI:L/SA:L/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	CWE		CWE-79
  Added	Affected		New affected value received. <a href="https://github.com/CVEProject/cvelistV5/blob/main/cves/2026/117xxx/CVE-2026-117494.json">CVE-2026-117494</a>
  Added	Reference		https://www.incibe.es/en/incibe-cert/notices/aviso/multiple-vulnerabilities-sisenses-cloud-bi-platform

EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days. Following chart shows the EPSS score history of the vulnerability.