How severe is CVE-2026-8517?

CVE-2026-8517 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-2026-8517 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (39th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-8517?

CVE-2026-8517 affects Google Chrome. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-8517?

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-2026-8517 have an EU (EUVD) identifier?

Yes. CVE-2026-8517 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-30431.

When was CVE-2026-8517 published?

CVE-2026-8517 was published on 2026-05-14 and last updated on 2026-06-17.

CVE-2026-8517

CVE-2026-8517 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-664.

Key facts

Severity: High (CVSS 3.x base score 8.8)
EPSS exploit prediction: 0% (39th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-30431
Weakness: CWE-664
Affected product: Google Chrome
Published: 2026-05-14
Last modified: 2026-06-17

Description

Object lifecycle issue in WebShare in Google Chrome on Mac prior to 148.0.7778.168 allowed a remote attacker who convinced a user to engage in specific UI gestures to execute arbitrary code via a crafted HTML page. (Chromium security severity: Critical)

Frequently asked questions

What is CVE-2026-8517?: Object lifecycle issue in WebShare in Google Chrome on Mac prior to 148.0.7778.168 allowed a remote attacker who convinced a user to engage in specific UI gestures to execute arbitrary code via a crafted HTML page. (Chromium security severity: Critical)
How severe is CVE-2026-8517?: CVE-2026-8517 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-2026-8517 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (39th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-8517?: CVE-2026-8517 affects Google Chrome. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-8517?: 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-2026-8517 have an EU (EUVD) identifier?: Yes. CVE-2026-8517 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-30431.
When was CVE-2026-8517 published?: CVE-2026-8517 was published on 2026-05-14 and last updated on 2026-06-17.

References

Affected products (1)

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

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