Information loss in BackgroundFetch in Google Chrome prior to 157.0.8103.38 allowed a remote attacker to bypass web origin policy via a crafted HTML page. (Chromium security severity: Low)

No CVSS v4.0

No CVSS v3.1

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

No EPSS score available.

Key SSVC decision points have not yet been added.

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions
Google Chrome affected
Version Status Constraints
157.0.8103.38 affected < 157.0.8103.38

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Advisories

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Fixes

Solution

No solution given by the vendor.

Workaround

No workaround given by the vendor.

References
Link Providers
https://chromereleases.googleblog.com/2026/11/stable-channel-update-for-desktop.html cve-icon cve-icon
https://issues.chromium.org/issues/498000798 cve-icon cve-icon
History

Tue, 03 Nov 2026 22:30:00 +0000

Type Values Removed Values Added
Title BackgroundFetch Origin Policy Bypass Causing Information Loss

Tue, 03 Nov 2026 20:45:00 +0000

Type Values Removed Values Added
Description Information loss in BackgroundFetch in Google Chrome prior to 157.0.8103.38 allowed a remote attacker to bypass web origin policy via a crafted HTML page. (Chromium security severity: Low)
Weaknesses CWE-221
References

Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: Chrome

Published:

Updated: 2026-11-03T20:42:53.410Z

Reserved: 2026-11-03T09:49:23.111Z

Link: CVE-2026-121134

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Awaiting Analysis

Published: 2026-11-03T21:17:21.937

Modified: 2026-11-03T21:17:22.043

Link: CVE-2026-121134

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-11-03T22:15:02Z

Weaknesses