How severe is CVE-2026-11199?

CVE-2026-11199 has a CVSS 3.x base score of 5.9, rated medium severity. It is exploitable over network with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.

Is CVE-2026-11199 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (9th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-11199?

CVE-2026-11199 affects Google Chrome. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-11199?

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

Does CVE-2026-11199 have an EU (EUVD) identifier?

Yes. CVE-2026-11199 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-34660.

When was CVE-2026-11199 published?

CVE-2026-11199 was published on 2026-06-04 and last updated on 2026-06-17.

CVE-2026-11199

CVE-2026-11199 is a medium-severity vulnerability in Google Chrome with a CVSS 3.x base score of 5.9. 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: Medium (CVSS 3.x base score 5.9)
EPSS exploit prediction: 0% (9th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-34660
Weakness: CWE-20
Affected product: Google Chrome
Published: 2026-06-04
Last modified: 2026-06-17

Description

Inappropriate implementation in WebRTC in Google Chrome prior to 149.0.7827.53 allowed an attacker in a privileged network position to leak cross-origin data via malicious network traffic. (Chromium security severity: Medium)

Frequently asked questions

What is CVE-2026-11199?: Inappropriate implementation in WebRTC in Google Chrome prior to 149.0.7827.53 allowed an attacker in a privileged network position to leak cross-origin data via malicious network traffic. (Chromium security severity: Medium)
How severe is CVE-2026-11199?: CVE-2026-11199 has a CVSS 3.x base score of 5.9, rated medium severity. It is exploitable over network with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.
Is CVE-2026-11199 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (9th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-11199?: CVE-2026-11199 affects Google Chrome. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-11199?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2026-11199 have an EU (EUVD) identifier?: Yes. CVE-2026-11199 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-34660.
When was CVE-2026-11199 published?: CVE-2026-11199 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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