How severe is CVE-2026-11158?

CVE-2026-11158 has a CVSS 3.x base score of 8.6, rated high severity. It is exploitable over local access with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2026-11158 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (1st percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-11158?

CVE-2026-11158 affects Google Chrome. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-11158?

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-2026-11158 have an EU (EUVD) identifier?

Yes. CVE-2026-11158 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-34619.

When was CVE-2026-11158 published?

CVE-2026-11158 was published on 2026-06-04 and last updated on 2026-06-17.

CVE-2026-11158

CVE-2026-11158 is a high-severity vulnerability in Google Chrome with a CVSS 3.x base score of 8.6. 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-20.

Key facts

Severity: High (CVSS 3.x base score 8.6)
EPSS exploit prediction: 0% (1st percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-34619
Weakness: CWE-20
Affected product: Google Chrome
Published: 2026-06-04
Last modified: 2026-06-17

Description

Insufficient validation of untrusted input in Downloads in Google Chrome on Mac prior to 149.0.7827.53 allowed a local attacker to potentially perform a sandbox escape via a crafted AppleScript command. (Chromium security severity: Medium)

Frequently asked questions

What is CVE-2026-11158?: Insufficient validation of untrusted input in Downloads in Google Chrome on Mac prior to 149.0.7827.53 allowed a local attacker to potentially perform a sandbox escape via a crafted AppleScript command. (Chromium security severity: Medium)
How severe is CVE-2026-11158?: CVE-2026-11158 has a CVSS 3.x base score of 8.6, rated high severity. It is exploitable over local access with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2026-11158 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (1st percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-11158?: CVE-2026-11158 affects Google Chrome. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-11158?: 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-2026-11158 have an EU (EUVD) identifier?: Yes. CVE-2026-11158 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-34619.
When was CVE-2026-11158 published?: CVE-2026-11158 was published on 2026-06-04 and last updated on 2026-06-17.

References

Affected products (1)

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

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