How severe is CVE-2026-12446?

CVE-2026-12446 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 low, integrity none, and availability none.

Is CVE-2026-12446 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-2026-12446?

CVE-2026-12446 affects Google Chrome. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-12446?

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

Does CVE-2026-12446 have an EU (EUVD) identifier?

Yes. CVE-2026-12446 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-37531.

When was CVE-2026-12446 published?

CVE-2026-12446 was published on 2026-06-17 and last updated on 2026-06-18.

CVE-2026-12446

CVE-2026-12446 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-863.

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-2026-37531
Weakness: CWE-863
Affected product: Google Chrome
Published: 2026-06-17
Last modified: 2026-06-18

Description

Inappropriate implementation in Passwords in Google Chrome prior to 149.0.7827.155 allowed a remote attacker to leak cross-origin data via a crafted HTML page. (Chromium security severity: High)

Frequently asked questions

What is CVE-2026-12446?: Inappropriate implementation in Passwords in Google Chrome prior to 149.0.7827.155 allowed a remote attacker to leak cross-origin data via a crafted HTML page. (Chromium security severity: High)
How severe is CVE-2026-12446?: CVE-2026-12446 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 low, integrity none, and availability none.
Is CVE-2026-12446 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-2026-12446?: CVE-2026-12446 affects Google Chrome. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-12446?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2026-12446 have an EU (EUVD) identifier?: Yes. CVE-2026-12446 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-37531.
When was CVE-2026-12446 published?: CVE-2026-12446 was published on 2026-06-17 and last updated on 2026-06-18.

References

Affected products (1)

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

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