How severe is CVE-2026-5871?

CVE-2026-5871 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2026-5871 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (25th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-5871?

CVE-2026-5871 affects Google Chrome. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-5871?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

Does CVE-2026-5871 have an EU (EUVD) identifier?

Yes. CVE-2026-5871 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-20673.

When was CVE-2026-5871 published?

CVE-2026-5871 was published on 2026-04-08 and last updated on 2026-06-17.

CVE-2026-5871

CVE-2026-5871 is a high-severity vulnerability in Google Chrome with a CVSS 3.x base score of 8.8. 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-843.

Key facts

Severity: High (CVSS 3.x base score 8.8)
EPSS exploit prediction: 0% (25th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-20673
Weakness: CWE-843
Affected product: Google Chrome
Published: 2026-04-08
Last modified: 2026-06-17

Description

Type Confusion in V8 in Google Chrome prior to 147.0.7727.55 allowed a remote attacker to execute arbitrary code inside a sandbox via a crafted HTML page. (Chromium security severity: High)

Frequently asked questions

What is CVE-2026-5871?: Type Confusion in V8 in Google Chrome prior to 147.0.7727.55 allowed a remote attacker to execute arbitrary code inside a sandbox via a crafted HTML page. (Chromium security severity: High)
How severe is CVE-2026-5871?: CVE-2026-5871 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2026-5871 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (25th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-5871?: CVE-2026-5871 affects Google Chrome. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-5871?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
Does CVE-2026-5871 have an EU (EUVD) identifier?: Yes. CVE-2026-5871 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-20673.
When was CVE-2026-5871 published?: CVE-2026-5871 was published on 2026-04-08 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:google:chrome:*:*:*:*:*:*:*:*

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