How severe is CVE-2026-11129?

CVE-2026-11129 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-2026-11129 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (7th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-11129?

CVE-2026-11129 affects Google Chrome. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-11129?

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

Does CVE-2026-11129 have an EU (EUVD) identifier?

Yes. CVE-2026-11129 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-34590.

When was CVE-2026-11129 published?

CVE-2026-11129 was published on 2026-06-04 and last updated on 2026-06-17.

CVE-2026-11129

CVE-2026-11129 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-352.

Key facts

Severity: Medium (CVSS 3.x base score 6.5)
EPSS exploit prediction: 0% (7th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-34590
Weakness: CWE-352
Affected product: Google Chrome
Published: 2026-06-04
Last modified: 2026-06-17

Description

Inappropriate implementation in Extensions 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: Medium)

Frequently asked questions

What is CVE-2026-11129?: Inappropriate implementation in Extensions 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: Medium)
How severe is CVE-2026-11129?: CVE-2026-11129 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-2026-11129 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (7th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-11129?: CVE-2026-11129 affects Google Chrome. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-11129?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2026-11129 have an EU (EUVD) identifier?: Yes. CVE-2026-11129 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-34590.
When was CVE-2026-11129 published?: CVE-2026-11129 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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