How severe is CVE-2024-5840?

CVE-2024-5840 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is none, integrity high, and availability none.

Is CVE-2024-5840 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (33rd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2024-5840?

CVE-2024-5840 primarily affects Google Chrome. In total, 3 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2024-5840?

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

Does CVE-2024-5840 have an EU (EUVD) identifier?

Yes. CVE-2024-5840 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2024-46986.

When was CVE-2024-5840 published?

CVE-2024-5840 was published on 2024-06-11 and last updated on 2026-06-17.

CVE-2024-5840

CVE-2024-5840 is a medium-severity vulnerability in Google Chrome with a CVSS 3.x base score of 6.5. 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-284.

Key facts

Severity: Medium (CVSS 3.x base score 6.5)
EPSS exploit prediction: 0% (33rd percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2024-46986
Weakness: CWE-284
Affected product: Google Chrome
Published: 2024-06-11
Last modified: 2026-06-17

Description

Policy bypass in CORS in Google Chrome prior to 126.0.6478.54 allowed a remote attacker to bypass discretionary access control via a crafted HTML page. (Chromium security severity: Medium)

Frequently asked questions

What is CVE-2024-5840?: Policy bypass in CORS in Google Chrome prior to 126.0.6478.54 allowed a remote attacker to bypass discretionary access control via a crafted HTML page. (Chromium security severity: Medium)
How severe is CVE-2024-5840?: CVE-2024-5840 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is none, integrity high, and availability none.
Is CVE-2024-5840 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (33rd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2024-5840?: CVE-2024-5840 primarily affects Google Chrome. In total, 3 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2024-5840?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2024-5840 have an EU (EUVD) identifier?: Yes. CVE-2024-5840 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2024-46986.
When was CVE-2024-5840 published?: CVE-2024-5840 was published on 2024-06-11 and last updated on 2026-06-17.

References

Affected products (3)

cpe:2.3:a:google:chrome:*:*:*:*:*:*:*:*
cpe:2.3:o:fedoraproject:fedora:39:*:*:*:*:*:*:*
cpe:2.3:o:fedoraproject:fedora:40:*:*:*:*:*:*:*

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