How severe is CVE-2023-5718?

CVE-2023-5718 has a CVSS 3.x base score of 4.3, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is low, integrity none, and availability none.

Is CVE-2023-5718 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (16th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2023-5718?

CVE-2023-5718 affects Vuejs Devtools. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2023-5718?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2023-5718 published?

CVE-2023-5718 was published on 2023-10-23 and last updated on 2026-06-17.

CVE-2023-5718

CVE-2023-5718 is a medium-severity vulnerability in Vuejs Devtools with a CVSS 3.x base score of 4.3. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-346.

Key facts

Severity: Medium (CVSS 3.x base score 4.3)
EPSS exploit prediction: 0% (16th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-346
Affected product: Vuejs Devtools
Published: 2023-10-23
Last modified: 2026-06-17

Description

The Vue.js Devtools extension was found to leak screenshot data back to a malicious web page via the standard `postMessage()` API. By creating a malicious web page with an iFrame targeting a sensitive resource (i.e. a locally accessible file or sensitive website), and registering a listener on the web page, the extension sent messages back to the listener, containing the base64 encoded screenshot data of the sensitive resource.

Frequently asked questions

What is CVE-2023-5718?: The Vue.js Devtools extension was found to leak screenshot data back to a malicious web page via the standard `postMessage()` API. By creating a malicious web page with an iFrame targeting a sensitive resource (i.e. a locally accessible file or sensitive website), and registering a listener on the web page, the extension sent messages back to the listener, containing the base64 encoded screenshot data of the sensitive resource.
How severe is CVE-2023-5718?: CVE-2023-5718 has a CVSS 3.x base score of 4.3, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is low, integrity none, and availability none.
Is CVE-2023-5718 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (16th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2023-5718?: CVE-2023-5718 affects Vuejs Devtools. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2023-5718?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2023-5718 published?: CVE-2023-5718 was published on 2023-10-23 and last updated on 2026-06-17.

References

https://gist.github.com/CalumHutton/bdb97077a66021ed455f87823cd7c7cb

Affected products (1)

cpe:2.3:a:vuejs:devtools:6.5.0:*:*:*:*:node.js:*:*

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