CVE-2023-5718Public exploitNetwork attack vector

Screenshot disclosure via unvalidated postMessage recipient

Published Oct 23, 2023 · Updated Sep 11, 2024

Information disclosure in Vue.js Vue DevTools before 6.5.1 allows remote attackers to read framed resource screenshots via a malicious page. The extension sends base64-encoded screenshot data through postMessage to a page listener without validating the recipient origin. Exploitation requires a user with the extension enabled to visit the page and a sensitive resource that the page can load in an iframe.

CVSS severity4.3
Medium
EPSS probability0.25%
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 Vue.js Vue DevTools before 6.5.1 allows remote attackers to read framed resource screenshots via a malicious page. The extension sends base64-encoded screenshot data through postMessage to a page listener without validating the recipient origin. Exploitation requires a user with the extension enabled to visit the page and a sensitive resource that the page can load in an iframe.

The record

CVE
CVE-2023-5718
Published
Oct 23, 2023
Updated
Sep 11, 2024
Vendor
Vue.js
Product
Vue DevTools
Classifications
CWE-200, CWE-346, T1113
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Oct 23, 2023CVE publishedPublication date reported by the CVE source.
  2. Sep 11, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

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

  1. Affected versionversion=< 6.5.1

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Vue.js · Vue DevToolsversion=< 6.5.1

Published CVSS scores

4.3SnykCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N
4.3NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N

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
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-200Exposure of Sensitive Information to an Unauthorized Actor
CWE-346Origin Validation Error
T1113Screen Capture

Public exploit references

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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