Goal Reached Thanks to every supporter — we hit 100%!

Goal: 1000 CNY · Raised: 1359 CNY

100%
Buy Us a Coffee

CVE-2026-105862— Payload: Bypassed sanitization of user uploaded SVGs

Quick assessment

Affected
payloadcms payload
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.

Payload 是一款免费且开源的无头内容管理系统（Headless CMS）。在 3.90.0 之前的版本以及 4.0.0-canary.34 之前的测试版（canary）中，若某个集合（collection）允许上传可下载的 SVG 文件，则攻击者可以存储一个经过恶意构造的 SVG 文件，该文件能够绕过系统的 sanitization（内容清理/过滤）机制。当用户下载并打开此 SVG 文件时，将执行攻击者控制的 JavaScript 代码。此问题已在 3.90.0 版本及 4.0.0-canary.34 测试版

CVSS 8.7 · High

Affected Version Matrix 2

VendorProduct Version RangeStatus
payloadcms payload < 3.90.0 affected
>= 4.0.0-canary.0, < 4.0.0-canary.34 affected
Get alerts for future matching vulnerabilities Log in to subscribe

I. Basic Information for CVE-2026-105862

Vulnerability Information
Have questions about the vulnerability? See if Shenlong's analysis helps!
View Shenlong Deep Dive ↗

Although we use advanced large model technology, its output may still contain inaccurate or outdated information.Shenlong tries to ensure data accuracy, but please verify and judge based on the actual situation.

Vulnerability Title
Payload: Bypassed sanitization of user uploaded SVGs
Source: CVE Program / CVE List V5
Vulnerability Description
Payload is a free and open source headless content management system. In versions before 3.90.0 and canary versions before 4.0.0-canary.34, a collection that allows downloadable SVG uploads can store a malicious SVG that bypasses sanitization and executes attacker-controlled JavaScript when a user downloads and opens the SVG. This issue is fixed in versions 3.90.0 and 4.0.0-canary.34.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A: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

Affected Products

Vendor Product Affected Versions CPE Subscribe
payloadcms payload < 3.90.0 -

II. Public POCs for CVE-2026-105862

# POC Description Source Link Shenlong Link
AI-Generated POC Premium

No public POC found.

Login to generate AI POC

III. Intelligence Information for CVE-2026-105862

请登录查看更多情报信息。

Other References for CVE-2026-105862 (3)

Same Patch Batch · payloadcms · 2026-10-06 · 29 CVEs total

CVE-2026-105857 10.0 CRITICAL Payload: RCE in Payload Form Builder
CVE-2026-105845 9.8 CRITICAL Payload: SQL Injection in SQLite and Postgres
CVE-2026-105859 9.8 CRITICAL Payload: Unauthorized update to collection documents
CVE-2026-105844 9.3 CRITICAL Payload: Prototype pollution in Payload Import Export plugin
CVE-2026-105851 9.3 CRITICAL Payload: Field access control bypass on auth collections
CVE-2026-105863 9.2 CRITICAL Payload authentication token field handling issue
CVE-2026-105850 8.8 HIGH Payload: Order confirmation validation issue in Payload Ecommerce
CVE-2026-105854 8.7 HIGH Payload: ReDoS in Multipart Content-Type Validation
CVE-2026-105868 8.6 HIGH Payload: Uploaded XML files could execute same-origin JavaScript
CVE-2026-105856 8.6 HIGH Payload: SQL injection in SQLite/Postgres
CVE-2026-105806 8.6 HIGH Payload: Improper access control for MCP API keys
CVE-2026-105865 8.1 HIGH Payload: Incomplete validation during the upload file lifecycle
CVE-2026-105858 8.1 HIGH Payload: Remote Code Execution through first-register
CVE-2026-105849 7.7 HIGH Payload: API key disclosure through ordinary document reads
CVE-2026-105855 7.6 HIGH Payload: Field-level password update restrictions were not enforced
CVE-2026-105861 7.2 HIGH Payload external upload trust validation issue
CVE-2026-106100 7.1 HIGH Payload: Field-level write access bypass in Payload on MongoDB
CVE-2026-105867 7.1 HIGH Payload: Client uploads could overwrite S3 objects
CVE-2026-105860 7.1 HIGH Payload: Tenant authorization bypass in Multi-Tenant Plugin
CVE-2026-105847 7.1 HIGH Payload: Polymorphic join queries could disclose hidden fields

Showing top 20 of 29 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: payload
Same vendor: payloadcms
Same weakness: CWE-79

V. Comments for CVE-2026-105862

No comments yet

Leave a comment