How severe is CVE-2026-11284?

CVE-2026-11284 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 high, integrity none, and availability none.

Is CVE-2026-11284 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (15th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-11284?

CVE-2026-11284 affects Google Chrome. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-11284?

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

Does CVE-2026-11284 have an EU (EUVD) identifier?

Yes. CVE-2026-11284 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-34745.

When was CVE-2026-11284 published?

CVE-2026-11284 was published on 2026-06-05 and last updated on 2026-06-17.

CVE-2026-11284

CVE-2026-11284 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-1300.

Key facts

Severity: Medium (CVSS 3.x base score 6.5)
EPSS exploit prediction: 0% (15th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-34745
Weakness: CWE-1300
Affected product: Google Chrome
Published: 2026-06-05
Last modified: 2026-06-17

Description

Side-channel information leakage in PerformanceAPIs in Google Chrome prior to 149.0.7827.53 allowed a remote attacker to leak cross-origin data via a crafted HTML page. (Chromium security severity: Low)

Frequently asked questions

What is CVE-2026-11284?: Side-channel information leakage in PerformanceAPIs in Google Chrome prior to 149.0.7827.53 allowed a remote attacker to leak cross-origin data via a crafted HTML page. (Chromium security severity: Low)
How severe is CVE-2026-11284?: CVE-2026-11284 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 high, integrity none, and availability none.
Is CVE-2026-11284 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (15th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-11284?: CVE-2026-11284 affects Google Chrome. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-11284?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2026-11284 have an EU (EUVD) identifier?: Yes. CVE-2026-11284 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-34745.
When was CVE-2026-11284 published?: CVE-2026-11284 was published on 2026-06-05 and last updated on 2026-06-17.

References

Affected products (1)

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

More vulnerabilities in Google Chrome

CVE-2026-13782 — Critical (CVSS 10.0): Use after free in Browser in Google Chrome prior to 150.0.7871.47 allowed a remote attacker who had compromised the…
CVE-2015-8548 — Critical (CVSS 10.0): Multiple unspecified vulnerabilities in Google V8 before 4.7.80.23, as used in Google Chrome before 47.0.2526.80, allow…
CVE-2015-6791 — Critical (CVSS 10.0): Multiple unspecified vulnerabilities in Google Chrome before 47.0.2526.80 allow attackers to cause a denial of service…
CVE-2015-6788 — Critical (CVSS 10.0): The ObjectBackedNativeHandler class in extensions/renderer/object_backed_native_handler.cc in the extensions subsystem…
CVE-2015-8480 — Critical (CVSS 10.0): The VideoFramePool::PoolImpl::CreateFrame function in media/base/video_frame_pool.cc in Google Chrome before…
CVE-2015-6787 — Critical (CVSS 10.0): Multiple unspecified vulnerabilities in Google Chrome before 47.0.2526.73 allow attackers to cause a denial of service…

All CVEs affecting Google Chrome →

Other CWE-1300 vulnerabilities

CVE-2026-11153 — Critical (CVSS 9.1): Side-channel information leakage in Forms in Google Chrome prior to 149.0.7827.53 allowed a remote attacker to leak…
CVE-2026-14085 — Medium (CVSS 6.5): Side-channel information leakage in CSS in Google Chrome prior to 150.0.7871.47 allowed a remote attacker to leak…
CVE-2026-14074 — Medium (CVSS 6.5): Side-channel information leakage in WebAuthentication in Google Chrome on iOS prior to 150.0.7871.47 allowed a remote…
CVE-2026-14071 — Medium (CVSS 6.5): Side-channel information leakage in WebAudio in Google Chrome prior to 150.0.7871.47 allowed a remote attacker to leak…
CVE-2026-13935 — Medium (CVSS 6.5): Side-channel information leakage in ComputePressure in Google Chrome prior to 150.0.7871.47 allowed a remote attacker…
CVE-2026-13922 — Medium (CVSS 6.5): Side-channel information leakage in Paint in Google Chrome prior to 150.0.7871.47 allowed a remote attacker to leak…

Browse all CWE-1300 vulnerabilities →