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CVE-2026-25100— Stored XSS via SVG File Upload in Bludit

Quick assessment

Affected
Bludit Bludit
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Bludit是Bludit开源的一套开源的轻量级博客内容管理系统（CMS）。 Bludit 3.18.2及之前版本存在跨站脚本漏洞，该漏洞源于图像上传功能存在存储型跨站脚本，可能导致上传恶意SVG文件并执行。

AI Predicted 6.1 Difficulty: Easy EPSS 0.19% · P8
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I. Basic Information for CVE-2026-25100

Vulnerability Information
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Vulnerability Title
Stored XSS via SVG File Upload in Bludit
Source: CVE Program / CVE List V5
Vulnerability Description
Bludit is vulnerable to Stored Cross-Site Scripting (XSS) in its image upload functionality. An authenticated attacker with content upload privileges (such as Author, Editor, or Administrator) can upload an SVG file containing a malicious payload, which is executed when a victim visits the URL of the uploaded resource. The uploaded resource itself is accessible without authentication. The vendor was notified early about this vulnerability, but stopped responding in the middle of coordination. All versions up to 3.18.2 are considered to be vulnerable, future versions might also be vulnerable.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:A/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N
Source: CVE Program / CVE List V5
Vulnerability Type
在Web页面生成时对输入的转义处理不恰当(跨站脚本)
Source: CVE Program / CVE List V5
Vulnerability Title
Bludit 跨站脚本漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Bludit是Bludit开源的一套开源的轻量级博客内容管理系统（CMS）。 Bludit 3.18.2及之前版本存在跨站脚本漏洞，该漏洞源于图像上传功能存在存储型跨站脚本，可能导致上传恶意SVG文件并执行。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
Bludit Bludit 0 ~ 3.18.2 -

II. Public POCs for CVE-2026-25100

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III. Intelligence Information for CVE-2026-25100

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Security Blog Posts for CVE-2026-25100 (1)

Vendor Pages for CVE-2026-25100 (1)

Same Patch Batch · Bludit · 2026-03-27 · 3 CVEs total

CVE-2026-25099 Remote Code Execution via Unrestricted File Upload in Bludit
CVE-2026-25101 Session Fixation in Bludit

IV. Related Vulnerabilities

Same product: Bludit
Same vendor: Bludit
Same weakness: CWE-79

V. Comments for CVE-2026-25100

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