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

Goal: 1000 CNY · Raised: 1336 CNY

100%
Buy Us a Coffee

CVE-2026-49212— Symfony UX: LiveComponentHydrator HMAC checksum lacks component and slot binding

AI Predicted 8.1 Difficulty: Easy EPSS 0.16% · P6

Affected Version Matrix 2

VendorProductVersion RangeStatus
symfonyux>= 3.0.0, < 3.1.0affected
< 2.36.0affected
Get alerts for future matching vulnerabilitiesLog in to subscribe

I. Basic Information for CVE-2026-49212

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Although we use advanced large model technology, its output may still contain inaccurate or outdated information.Shenlong tries to ensure data accuracy, but please verify and judge based on the actual situation.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
Symfony UX: LiveComponentHydrator HMAC checksum lacks component and slot binding
Source: CVE Program / CVE List V5
Vulnerability Description
Symfony UX is a JavaScript ecosystem for Symfony. From 2.8.0 until 2.36.0 and 3.1.0, the HMAC computed by Symfony\UX\LiveComponent\LiveComponentHydrator covered only sorted prop key/value pairs and did not include the component name, the slot identifier (props vs propsFromParent), or request context, allowing a signed blob minted for one component or slot to be replayed in another and set a read-only prop on a target component. This issue is fixed in versions 2.36.0 and 3.1.0.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N
Source: CVE Program / CVE List V5
Vulnerability Type
对数据真实性的验证不充分
Source: CVE Program / CVE List V5
Vulnerability Title
Symfony UX 输入验证错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Symfony ux是Symfony组织开源的一个Symfony的JavaScript生态系统。 Symfony UX 2.8.0之前版本、2.8.0至2.36.0版本和3.1.0版本存在输入验证错误漏洞，该漏洞源于HMAC计算仅覆盖排序的prop键值对，未包含组件名称、槽标识符或请求环境，可能导致为一个组件或槽生成的签名数据块被重用于另一组件并设置只读属性。
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

VendorProductAffected VersionsCPESubscribe
symfonyux >= 3.0.0, < 3.1.0 -

II. Public POCs for CVE-2026-49212

#POC DescriptionSource LinkShenlong Link
AI-Generated POCPremium

No public POC found.

Login to generate AI POC

III. Intelligence Information for CVE-2026-49212

请登录查看更多情报信息。

Patches & Fixes for CVE-2026-49212 (3)

Vendor Advisories for CVE-2026-49212 (1)

Same Patch Batch · symfony · 2026-07-17 · 7 CVEs total

CVE-2026-49209Symfony UX: Denial of service in symfony/ux-live-component via unbounded batch action requ
CVE-2026-49210Symfony UX: XSS in symfony/ux-live-component via attacker-controlled child component tag
CVE-2026-49215Symfony UX: CSRF Protection Bypass in symfony/ux-live-component — Accept Header is CORS-Sa
CVE-2026-49208Symfony UX: Format-less date LiveProps parsed with the permissive DateTime constructor
CVE-2026-49216Symfony UX: XSS in symfony/ux-autocomplete via unescaped AJAX response data
CVE-2026-49211Symfony UX: Information exposure via unescaped LIKE wildcards in EntitySearchUtil

IV. Related Vulnerabilities

Same product: ux
Same vendor: symfony
Same weakness: CWE-345

V. Comments for CVE-2026-49212

No comments yet

Leave a comment