CVE-2024-47771Network attack vector

Access-token disclosure via loose media URL matching

Published Oct 15, 2024 · Updated Oct 15, 2024

Information disclosure in Element Desktop 1.11.70 through 1.11.80 allows remote authenticated users to expose access tokens via malicious widgets. The Electron main process matches a Matrix media path as a raw URL substring and adds the account token without verifying that the request targets the homeserver. Exploitation requires a signed-in user to grant an untrusted widget permission, after which the token reaches an attacker-controlled origin.

CVSS severity7.0
High
EPSS probability0.59%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Information disclosure in Element Desktop 1.11.70 through 1.11.80 allows remote authenticated users to expose access tokens via malicious widgets. The Electron main process matches a Matrix media path as a raw URL substring and adds the account token without verifying that the request targets the homeserver. Exploitation requires a signed-in user to grant an untrusted widget permission, after which the token reaches an attacker-controlled origin.

The record

CVE
CVE-2024-47771
Published
Oct 15, 2024
Updated
Oct 15, 2024
Vendor
Element HQ
Product
Element Desktop
Classifications
CWE-200, T1528
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Oct 15, 2024CVE publishedPublication date reported by the CVE source.
  2. Oct 15, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=>= 1.11.70, < 1.11.81

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Element HQ · Element Desktopversion=>= 1.11.70, < 1.11.81

Published CVSS scores

7.0GitHub, Inc.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/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

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-200Exposure of Sensitive Information to an Unauthorized Actor
T1528Steal Application Access Token

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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