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CVE-2024-47779— Element Web vulnerable to potential exposure of access token via authenticated media

Quick assessment

Affected
element-hq element-web
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.

Element是Element开源的一个 Matrix 网络协作客户端。 Element存在安全漏洞，该漏洞源于在某些情况下，可能导致访问令牌泄露。

AI Predicted 7.5 Difficulty: Moderate EPSS 0.43% · P36
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I. Basic Information for CVE-2024-47779

Vulnerability Information
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Vulnerability Title
Element Web vulnerable to potential exposure of access token via authenticated media
Source: CVE Program / CVE List V5
Vulnerability Description
Element is a Matrix web client built using the Matrix React SDK. Element Web versions 1.11.70 through 1.11.80 contain a vulnerability which can, under specially crafted conditions, lead to the access token becoming exposed to third parties. At least one vector has been identified internally, involving malicious widgets, but other vectors may exist. Note that despite superficial similarity to CVE-2024-47771, this is an entirely separate vulnerability, caused by a separate piece of code included only in Element Web. Element Web and Element Desktop share most but not all, of their code and this vulnerability exists in the part of the code base which is not shared between the projects. Users are strongly advised to upgrade to version 1.11.81 to remediate the issue. As a workaround, avoid granting permissions to untrusted widgets.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:H/VI:L/VA:L/SC:N/SI:N/SA:N
Source: CVE Program / CVE List V5
Vulnerability Type
信息暴露
Source: CVE Program / CVE List V5
Vulnerability Title
Element 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Element是Element开源的一个 Matrix 网络协作客户端。 Element存在安全漏洞，该漏洞源于在某些情况下，可能导致访问令牌泄露。
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
element-hq element-web >= 1.11.70, < 1.11.81 -

II. Public POCs for CVE-2024-47779

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III. Intelligence Information for CVE-2024-47779

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IV. Related Vulnerabilities

Same product: element-web
Same vendor: element-hq
Same weakness: CWE-200

V. Comments for CVE-2024-47779

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