How severe is CVE-2026-11257?

CVE-2026-11257 has a CVSS 3.x base score of 4.3, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is none, integrity low, and availability none.

Is CVE-2026-11257 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-2026-11257?

CVE-2026-11257 affects Google Chrome. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-11257?

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

Does CVE-2026-11257 have an EU (EUVD) identifier?

Yes. CVE-2026-11257 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-34718.

When was CVE-2026-11257 published?

CVE-2026-11257 was published on 2026-06-05 and last updated on 2026-06-17.

CVE-2026-11257

CVE-2026-11257 is a medium-severity vulnerability in Google Chrome with a CVSS 3.x base score of 4.3. 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-284.

Key facts

Severity: Medium (CVSS 3.x base score 4.3)
EPSS exploit prediction: 0% (9th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-34718
Weakness: CWE-284
Affected product: Google Chrome
Published: 2026-06-05
Last modified: 2026-06-17

Description

Inappropriate implementation in Browser in Google Chrome prior to 149.0.7827.53 allowed a remote attacker to bypass navigation restrictions via a crafted HTML page. (Chromium security severity: Low)

Frequently asked questions

What is CVE-2026-11257?: Inappropriate implementation in Browser in Google Chrome prior to 149.0.7827.53 allowed a remote attacker to bypass navigation restrictions via a crafted HTML page. (Chromium security severity: Low)
How severe is CVE-2026-11257?: CVE-2026-11257 has a CVSS 3.x base score of 4.3, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is none, integrity low, and availability none.
Is CVE-2026-11257 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-2026-11257?: CVE-2026-11257 affects Google Chrome. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-11257?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2026-11257 have an EU (EUVD) identifier?: Yes. CVE-2026-11257 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-34718.
When was CVE-2026-11257 published?: CVE-2026-11257 was published on 2026-06-05 and last updated on 2026-06-17.

References

Affected products (1)

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

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